What is the wave velocity if the wave length is 100 cm and the frequency is 2 Hz?​

Answers

Answer 1

Answer:

velocity = 2m/s

using v=fΠ

convert 100 CM to m

Answer 2

Answer:

200 cm per second

Explanation:

The equation for wave velocity=wavelength x frequency, since the wavelength is 100 and the frequency is two, the equation would be 100 x 2, which equals 200. Therefore, the correct answer is 200 cm per second.


Related Questions

Which of the following involves the emission of a particle that has the same mass of an electron with a positive charge.
a.
alpha decay
c.
positron emission
b.
beta decay
d.
nuclear forces

Answers

The answer is beta decay

Answer:

The proper answer for this question would be B. Beta Decay

Explanation:

I hope this helps

How does the lever arm change when you decrease the distance to the nut?
It decreases
It increases
Stays the same

Answers

When you decrease the distance to the nut, the lever arm also decreases. Hence the correct option is "It decreases".

This is because the lever arm is the perpendicular distance between the axis of rotation and the line of action of the force. In this case, the axis of rotation is the nut and the force is applied at a point closer to the nut. As the distance between the force and the nut decreases, the lever arm also decreases.

This relationship between distance and lever arm is important in understanding how levers work. A longer lever arm allows for greater torque or rotational force to be applied with the same amount of force. Conversely, a shorter lever arm requires more force to generate the same amount of torque. By decreasing the distance to the nut, you are effectively shortening the lever arm and therefore reducing the torque that can be applied.

Understanding the relationship between distance and lever arm can be useful in a variety of contexts, such as in engineering, physics, and even sports. It can help in designing more efficient machines or in understanding how to optimize physical movements for maximum performance.

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You observe the h-beta line in a star at a wavelength of 483.5 nm. what is the velocity of the star relative to you?

Answers

The velocity of the star relative to you is approximately 2.974 x 10⁶ m/s.

To calculate the velocity of the star relative to you based on the observed wavelength of the H-beta line, we can use the formula for the Doppler effect.

The Doppler effect describes the change in wavelength of light due to the relative motion between the source and observer. The formula for the Doppler effect is given as:

Δλ/λ₀ = v/c

Where,

Δλ is the change in wavelength,

λ₀ is the rest wavelength,

v is the velocity of the star relative to you, and

c is the speed of light.

In this case, the observed wavelength (Δλ) is 483.5 nm, and the rest wavelength (λ₀) of the H-beta line is known to be 486.1 nm.

We can substitute these values into the formula and solve for v.

(Δλ/λ₀) = (v/c)

(483.5 nm / 486.1 nm) = (v / 3 x 10⁸ m/s)

Now we can solve for v:

v = (483.5 nm / 486.1 nm) * (3 x 10⁸ m/s)

v ≈ 2.974 x 10⁶ m/s

Therefore, the velocity is approximately 2.974 x 10⁶ m/s.

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Cellular respiration occurs in every cell of our bodies. Through this process, we obtain the energy we need for life. During cellular respiration, oxygen helps in breaking down sugar molecules into carbon dioxide and water molecules. Which reaction correctly represents the cellular respiration process?(1 point)

carbon dioxide + water → sugar + oxygen + energy

sugar + oxygen → carbon dioxide + water + energy

carbon dioxide + water + energy → sugar + oxygen

sugar + oxygen + energy → carbon dioxide + water

Answers

Answer:

B. sugar + oxygen → carbon dioxide + water + energy

Explanation:

Energy is that which sustains living organisms, so as to perform various activities. One of the processes by which living organisms produce energy is by respiration.

Respiration involves the breathing-in of oxygen and breathing-out of carbon dioxide as a waste. The oxygen helps in breaking down molecules of carbohydrates e.g sugar in the system of living organisms into energy, carbon dioxide and water.

This process is well represented by the equation in option B.

The reaction which correctly represents the cellular respiration process is sugar + oxygen → carbon dioxide + water + energy.

What is Cellular respiration?

Cellular respiration involves the conversion of chemical energy from food

into ATP which is needed for the cell's daily activities.

This process is done in the presence of oxygen to form products such as:

Carbon dioxideWaterEnergy(ATP).

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Chemical weathering (southern latitudes) produces more
clay-sized material than does physical weathering (northern
latitudes).
True? False?

Answers

Weathering is the process that breaks down rocks, soils, and minerals, as well as artificial materials, through contact with the Earth's atmosphere, water, and biological organisms. There are two main types of weathering, chemical and physical, which occur in a variety of environments, including the atmosphere, hydrosphere, and biosphere.

According to the statement, chemical weathering in southern latitudes generates more clay-sized particles than physical weathering in northern latitudes. This, however, is not accurate. Physical weathering can also produce clay-sized particles. Clay particles are created as a result of the weathering of various rock types, including granite, feldspar, and mica. They can form as a result of either physical or chemical weathering processes. Clay-sized particles produced by physical weathering occur when rocks are crushed or broken down into smaller pieces, whereas clay-sized particles produced by chemical weathering occur as a result of the breakdown of primary minerals such as feldspar and mica.

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What is the relationship between momentum and kinetic energy.

Answers

Answer:

constant object, momentum increases directly with speed

Explanation:

whereas kinetic energy increases the square of the velocity due to energy momentum

a person travels along a straight road for the first half of total time with a velocity v1 and the second half of total time with a velocity v2. thus the average velocity v is given by

Answers

Therefore, the person's average velocity is given by (v1 + v2) / 2.

When content is loaded, it means that information or data is being stored or displayed. In this scenario, a person is traveling along a straight road and changing their velocity halfway through the total time. The first half of the total time is spent with a velocity of v1, and the second half is spent with a velocity of v2.

To find the average velocity, we use the formula:

v = (total displacement) / (total time)

Since the person is traveling along a straight road, the total displacement is just the difference between the starting and ending points. However, we don't have enough information to calculate the displacement in this problem.

Instead, we can use the fact that the average velocity is equal to the total displacement divided by the total time. Since the person is traveling for the same amount of time with each velocity, we can say that the total time is just twice the time spent at either velocity:

total time = time spent at v1 + time spent at v2 = 2 * (total time / 2) = total time

Now we can write the formula for the average velocity:

v = (total displacement) / (total time) = (d) / (total time)

To find d, we can use the fact that the person traveled the first half of the distance with velocity v1 and the second half with velocity v2. Since distance is equal to velocity times time, we can say:

d = (v1)(total time / 2) + (v2)(total time / 2)

Now we can substitute this into the formula for v:

v = (d) / (total time) = [(v1)(total time / 2) + (v2)(total time / 2)] / (total time)

Simplifying this expression, we get:

v = (v1 + v2) / 2

This means that the average velocity is just the average of the two velocities. So if the person travels at 10 m/s for the first half of the time and 20 m/s for the second half of the time, the average velocity is:

v = (10 m/s + 20 m/s) / 2 = 15 m/s

Therefore, the person's average velocity is given by (v1 + v2) / 2.

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which statement best describes the position vs. time and acceleration vs. time graphs for an object that is speeding up and for an object that is not?

Answers

The position vs. time graph is a depiction of the motion of an object with time, while the acceleration vs. time graph is a depiction of how the acceleration of an object changes with time. The position-time graph will show an increasing slope for a moving object and a decreasing slope for a stationary object.

When an object is speeding up, its acceleration increases, and when it is slowing down, its acceleration decreases.The slope of the acceleration-time graph reflects the change in velocity over time. For an object that is speeding up, the acceleration-time graph has a positive slope since the object's speed is increasing, whereas for an object that is slowing down, the slope of the acceleration-time graph is negative, and the object's speed is decreasing. Finally, for an object that is stationary, the acceleration-time graph has a slope of zero since the speed is not changing.

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A baseball with a mass of 0. 15 kilograms collides with a bat at a speed of 40 meters/second. The duration of the collision is 8. 0 x 103 seconds. The

ball moves off with a speed of 50 meters/second in the opposite direction. What is the value of the force?

Answers

The value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.

When an object collides with another object, they exchange energy. For example, a baseball and bat collision or a car collision. When two objects collide, the force of the collision has to be equal on both sides of the collision according to Newton's Third Law. So, to find the value of force, we will apply the equation:

F = ΔP / ΔT

where F is the force, ΔP is the change in momentum, and ΔT is the time of collision. The equation represents the impulse momentum theorem.

Now, let's apply the given values to the above equation.

Final momentum (p2) = mass × final velocity (v2)

p2 = 0.15 kg × (-50 m/s)

p2 = -7.5 kg.m/s

Initial momentum (p1) = mass × initial velocity (v1)

p1 = 0.15 kg × (40 m/s)

p1 = 6 kg.m/s

Change in momentum (ΔP) = p2 - p1

ΔP = -7.5 kg.m/s - 6 kg.m/s

ΔP = -13.5 kg.m/s

Time of collision (ΔT) = 8.0 × 10³ s

Now, putting the values of ΔP and ΔT in the equation of impulse momentum theorem, we get:

F = ΔP / ΔT

F = -13.5 kg.m/s ÷ 8.0 × 10³ s

F = -1.7 × 10⁻³ N

Thus, the value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.

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who interpreted the appearance of the rings surrounding saturn

Answers

The appearance of the rings surrounding Saturn was first interpreted by the astronomer Galileo Galilei.

In 1610, Galileo observed Saturn using a telescope, which allowed him to discern that the planet appeared to have "handles" or "ears" on either side.

However, the true nature of these features was not immediately understood.

It wasn't until 1655 that the Dutch astronomer Christiaan Huygens, armed with a more advanced telescope, made a significant breakthrough. Huygens correctly interpreted the observed features as a ring system surrounding Saturn.

His observations led to the publication of his work "Systema Saturnium" in 1659, where he accurately described the rings as a thin, flat structure composed of multiple concentric rings.

Huygens' interpretation of the rings surrounding Saturn marked a significant milestone in our understanding of the solar system and remains a fundamental discovery in the field of astronomy.

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observations to date suggest that earth-sized planets orbiting sun-like stars

Answers

Observations conducted thus far have shown that there are indeed Earth-sized planets that orbit around sun-like stars.

This is an exciting discovery as it suggests that there may be other planets out there that could potentially support life as we know it. The first exoplanet of this type was discovered in 2015, and since then, there have been several more discoveries made using various methods such as the transit and radial velocity techniques.

In order to detect these exoplanets, astronomers use sophisticated technology and instruments such as space telescopes, which can measure the slight dip in the star's brightness as the planet passes in front of it. These observations have allowed scientists to gather more data about the properties of these exoplanets such as their size, mass, and distance from their host star.

These findings have opened up new avenues for scientific research, as we continue to explore the universe and learn more about our place in it. The discovery of Earth-sized planets orbiting sun-like stars is a significant step forward in our quest to find habitable planets outside of our solar system.

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the metal equilateral triangle in the figure, 20 cm on each side, is halfway into a 0.50 t magnetic field. (figure 1)

Answers

In the given scenario, we have a metal equilateral triangle with sides measuring 20 cm. This triangle is placed halfway into a magnetic field with a magnitude of 0.50 T (Tesla). The magnetic field can exert a force on the triangle due to the interaction between the magnetic field and the electric currents induced in the metal.

To determine the force acting on the triangle, we can utilize the equation F = BIL, where F represents the force, B is the magnetic field, I is the electric current, and L is the length of the conductor in the magnetic field.

Since the triangle is made of metal, it is a good conductor, and electric currents will be induced in it when it is placed in the magnetic field. In this case, we can consider each side of the triangle as a conductor.

The length of each side of the equilateral triangle is given as 20 cm. As the triangle is halfway into the magnetic field, we can consider only half the length of each side (10 cm or 0.1 m) as the effective length in the magnetic field.

To calculate the force, we need to determine the current. Since the current is induced in the triangle due to the magnetic field, we need more information about the situation. Without further details, it is not possible to calculate the exact value of the current and consequently, the force acting on the triangle. Therefore, additional information is required to provide a precise answer.

In summary, to calculate the force on the metal equilateral triangle in the given magnetic field, we need more information about the induced current in the triangle. The force can be determined using the formula F = BIL, where B is the magnetic field, I is the current, and L is the effective length of the conductor in the magnetic field.

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a vector has an x component of -24.0 units and a y component of 43.2 units. find the magnitude and direction of this vector.

Answers

The vector has a magnitude of 50.4 units and a direction of -60.7 degrees. To find the magnitude and direction of a vector with given x and y components, we use the Pythagorean theorem and trigonometry.


First, we can use the Pythagorean theorem to find the magnitude (or length) of the vector. The magnitude is the square root of the sum of the squares of the x and y components:
magnitude = sqrt((-24.0)^2 + (43.2)^2)
magnitude = 50.4 units
So the magnitude of the vector is 50.4 units.
Next, we can use trigonometry to find the direction of the vector, which is the angle it makes with the positive x-axis. We can use the inverse tangent function (tan^-1) to find this angle:

direction = tan^-1(43.2/-24.0)
direction = -60.7 degrees
(Note that we use a negative sign because the vector points in the third quadrant, where angles are measured clockwise from the positive x-axis.)

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Which is NOT an example of work?
pushing a box across the floor

trying to push a rock that never moves

picking up a box off the floor

raising a barbell over your head

Answers

Answer:

trying to push a rock that never moves

Explanation:

let me try my best to break the concepts down for you.

the definition of work done is

work done by a constant force on an object is the product of the force and the distance moved by the object in the direction of the force.

this means that when you apply a force, it must move.

basically it is like holding a book in your hands and not moving, are you fighting the gravitational force?

when you push a box, it definitely moves in the direction you push right?

when you raise the barbel, you are applying a upward force, and barbel us moving upwards, so work is done

hope it helps, if not please report it so that someone else gets to try it

Students have been assigned to write reports on cell organelles. Eric’s report is about the organelle that supports and gives structure to plant cells. Which organelle is Eric writing about?

A. Chloroplast
B. Cell wall
C. Mitochondria
D. Nucleus

Answers

Eric is writing about the cell wall.
Chloroplast is for photosynthesis.
Mitochondria releases energy from respiration.
Nucleus controls the activities of the cell.
But the cell wall supports and gives structure to the cell.

Cell wall is that organelle that gives structure to plant cells. A cell wall is a structural layer that surrounds certain types of cells. It can be hard, flexible, or rigid at times.

What is a cell wall?A cell wall is a structural layer that surrounds certain types of cells. It can be hard, flexible, or rigid at times. It functions as a filtration system as well as structural support and cell protection. Many eukaryotes, including animals, lack cell walls, though fungi, algae, and plants, as well as the vast majority of prokaryotes, do (except mollicute bacteria). One of their primary functions is to act as pressure channels, preventing the cell from over-expanding when water enters.The polysaccharides cellulose, hemicelluloses, and pectin make up the primary cell wall of land plants. Other polymers, such as lignin, suberin, and cutin, are frequently anchored to or embedded in plant cell walls.

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what is magnetic shielding?

Answers

It is basically shielding a magnetic field. This can be done with rubber or any other material that is thick. Normally small magnets already block the shield.

A 2.50-m-long organ pipe is open at one end and closed at the other. Its fundamental tone has wavelength

Answers

The wavelength of the fundamental tone in this case is 10.00M

What is Wavelength?

Wavelength is a physical quantity that measures the distance between two consecutive points in a wave that are in phase, that is, that have the same degree of oscillation or displacement from their rest position. It is usually represented by the symbol λ (lambda) and is expressed in units of distance, such as meters, centimeters, or nanometers, depending on the scale of the wave being considered. In general, the wavelength of a wave is inversely proportional to its frequency, with longer wavelengths corresponding to lower frequencies and shorter wavelengths corresponding to higher frequencies.

The fundamental tone of an organ pipe that is open at one end and closed at the other has a wavelength that is four times the length of the pipe. Therefore, the wavelength of the fundamental tone in this case is:

λ = 4L = 4(2.50 m) = 10.00 m

where L is the length of the pipe.

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You are standing at rest at a bus stop. A bus moving at a con- stant speed of 5.00 m>s passes you. When the rear of the bus is 12.0 m past you, you realize that it is your bus, so you start to run toward it with a constant acceleration of 0.960 m>s 2 . How far would you have to run before you catch up with the rear of the bus, and how fast must you be running then

Answers

the distance that an individual needs to run before catching up with the rear of the bus is 4.50 m. The speed of the individual when he catches up with the bus is 5.00 m/s.

Given that the speed of the bus = 5.00 m/sRelative speed between the bus and the individual = 0 (since the individual is at rest)Hence the bus covers a distance of 12 m while the individual is starting to run to catch the bus. Now the individual will start moving with a constant acceleration of 0.960 m/s2.As per the kinematic equation,  x = ut + 0.5at2where, x = distance covered by the individual, u= initial velocity = 0m/sa = acceleration = 0.960 m/s2t = time taken to catch the bus

Since the individual starts running when the rear of the bus is 12.0 m past him, the relative distance covered by the individual is = distance covered by the bus (when the individual starts to run) - 12 m

Therefore, x = 0 + 0.5 × 0.960 × t2= 0.480 t2 m

When the individual catches the rear of the bus, the distance covered by him should be equal to the distance covered by the bus. Therefore,0.480 t2 = distance covered by the bus = speed of the bus × time taken= 5tOn solving the above equations, t = 3.10 s

Distance covered by the individual = 0.480 t2 = 0.480 × (3.10)2 = 4.50 mThe individual should be running at the same speed as that of the bus when he catches the rear of the bus. Hence his final speed = 5.00 m/s.

The problem deals with an individual running to catch a bus moving at a constant speed of 5.00 m/s. The individual has a constant acceleration of 0.960 m/s2. In order to determine how far he needs to run to catch the bus, the distance covered by the bus when the individual starts running should be calculated first.

This distance is equal to 12 m. Using the kinematic equation, x = ut + 0.5at2, where u = 0, a = 0.960 m/s2, and t is the time taken to catch the bus, the distance covered by the individual can be calculated. When the individual catches the rear of the bus, his speed should be the same as that of the bus, which is 5.00 m/s.

The distance covered by the individual is 4.50 m and the final speed is 5.00 m/s

the distance that an individual needs to run before catching up with the rear of the bus is 4.50 m. The speed of the individual when he catches up with the bus is 5.00 m/s.

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Thirteen resistors are connected across points A and B as shown in the figure. If all the resistors are
accurate to 2 significant figures, what is the equivalent resistance between points A and B?

Thirteen resistors are connected across points A and B as shown in the figure. If all the resistors areaccurate

Answers

The equivalent resistance between points A and B in the diagram is 22 Ω

How do I determine the equivalent resistance?

We shall begin by obtaining the equivalent resistance in parallel (i,e the three 6 Ω resistor). Details below:

Resistor 1 (R₁) = 6 ΩResistor 2 (R₂) = 6 ΩResistor 3 (R₃) = 6 ΩEquivalent resistance (Rₜ) = ?

1/Rₜ = 1/R₁ + 1/R₂ + 1/R₃

1/Rₜ = 1/6 + 1/6 + 1/6

1/Rₜ = 3/6

1/Rₜ = 1/2

Rₜ = 2 Ω

Finally, we shall determine the equivalent resistance between A and B (i.e series arrangement). Details below:

Resistor 1 (R₁) = Resistor 2 (R₂) = ... = Resistor (R₁₁) = 2 ΩEquivalent resistance (R) =?

R = R₁ + R₂ + R₃ + R₄ + R₅ + R₆ + R₇ + R₈ + R₉ + R₁₀ + R₁₁

R = 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2

R = 22Ω

Thus, we can conclude that the equivalent resistance is 22 Ω

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Which one of the following statements is true concerning the electrostatic charge on a conductor?
A. It is uniformly distributed throughout the volume
B. It is confined to the surface and is uniformly distributed
C. Most of the charge is on the outer surface, but it is not uniformly distributed
D. It is entirely on the surface and it is distributed according to the shape of the object
E. It is dispersed throughout the volume of the object and distributed according to the object's shape

Answers

The correct statement concerning the electrostatic charge on a conductor is “it is entirely on the surface and it is distributed according to the shape of the object” (D)

In the presence of an electric field, it is known that free electrons in a conductor will either drift or be forced to move in response to the field. Within the conductor, the electrons distribute themselves in such a way as to ensure that the ultimate electric field at every point within the conductor is zero.

Near the edge of a conductor, the electric field lines are oriented perpendicular to the surface of the wire, and they terminate or begin on charges that are located there. The surface or surfaces of a conductor are the only locations where an excess charge can be found.

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2-Write True(T) if the sentence is true. Write False(F) if the sentence is
false.
Momentum is a measure of the motion of a body equal to the product of its
mass and acceleration due to gravity.
Impulse is defined as the force times the time interval.
The tendency of an object to resist a change in motion is called Force
If the speed of an object is doubled, its momentum is multiplied by 2
Sudden change in momentum in a collision, results in a large force that can
cause injury.
Safety features of modern cars ensures that energy is not absorbed when vehicles
stop:
Crumple zones are built into cars to increase the duration of crashes.

Answers

i have no clue that’s confusing
1 false mass into acc is force
2 true
3 false inertia
4 false
5 false

Find the center of mass of the region bounded by y=9-x^2 y=5/2x , and the z-axis. Center of Mass = __?
Note: You can earn partial credit on this problem.

Answers

The centre of mass of the region is bounded by y=9-x^2 y=5/2x, and the z-axis is (3.5, 33/8). Formulae used to find the centre of mass are as follows:x bar = (1/M)*∫∫∫x*dV, where M is the total mass of the system y bar = (1/M)*∫∫∫y*dVwhere M is the total mass of the system z bar = (1/M)*∫∫∫z*dV, where M is the total mass of the systemThe region bounded by y=9-x^2 and y=5/2x, and the z-axis is shown in the attached figure.

The two curves intersect at (-3, 15/2) and (3, 15/2). Thus, the total mass of the region is given by M = ∫∫ρ*dA, where ρ = density. We can assume ρ = 1 since no density is given.M = ∫[5/2x, 9-x^2]∫[0, x^2+5/2x]dAy bar = (1/M)*∫∫∫y*dVTherefore,y bar = (1/M)*∫[5/2x, 9-x^2]∫[0, x^2+5/2x]y*dA= (1/M)*∫[5/2x, 9-x^2]∫[0, x^2+5/2x]ydA...[1].

The limits of integration in the above equation are from 5/2x to 9-x^2 for x and from 0 to x^2+5/2x for y.To evaluate the above integral, we need to swap the order of integration. Therefore,y bar = (1/M)*∫[0, 3]∫[5/2, (9-y)^0.5]y*dxdy...[2].

The limits of integration in the above equation are from 0 to 3 for y and from 5/2 to (9-y)^0.5 for x.Substituting the values and evaluating the integral, we get y bar = (1/M)*[(9-5/2)^2/2 - (9-(15/2))^2/2]= (1/M)*(25/2)...[3].

Also, the x coordinate of the center of mass is given by,x bar = (1/M)*∫∫∫x*dVTherefore,x bar = (1/M)*∫[5/2x, 9-x^2]∫[0, x^2+5/2x]x*dA= (1/M)*∫[5/2x, 9-x^2]∫[0, x^2+5/2x]xdA...[4].

The limits of integration in the above equation are from 5/2x to 9-x^2 for x and from 0 to x^2+5/2x for y.To evaluate the above integral, we need to swap the order of integration. Therefore, x bar = (1/M)*∫[0, 3]∫[5/2, (9-y)^0.5]xy*dxdy...[5].

The limits of integration in the above equation are from 0 to 3 for y and from 5/2 to (9-y)^0.5 for x.

Substituting the values and evaluating the integral, we get x bar = (1/M)*[63/8]= (1/M)*(63/8)...[6]Thus, the centre of mass of the region is bounded by y=9-x^2 y=5/2x, and the z-axis is (3.5, 33/8).

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Suppose that people living near a particular​ high-voltage power line have a higher incidence of cancer than people living farther from the power line. Can you conclude that the​ high-voltage power line is the cause of the elevated cancer​ rate? If​ not, what other explanations might there be for​ it? What other types of research would you like to see before you conclude that​ high-voltage power lines cause​ cancer?

Answers

Complete Question

Complete Question is attached below

Answer:

a)Option B

b)Option B

Explanation:

a)

Without any confirmation it will be utterly wrong to conclude that high power voltage is the reason for the elevated cancer cases

Therefore

Option B

b)

The High Concentration of cells volume in a part of the Body is what causes Cancer

Therefore

Option B

Suppose that people living near a particular high-voltage power line have a higher incidence of cancer

a widely-accepted explanation of the natural world that is supported by rigorous experimental testing and consistent conclusions is a:

Answers

A scientific theory refers to a well-substantiated explanation of natural phenomena that is supported by rigorous experimental testing and consistent conclusions. The scientific theory is a widely-accepted explanation of the natural world that is supported by rigorously tested experiments and consistent conclusions

The widely-accepted explanation of the natural world that is supported by rigorous experimental testing and consistent conclusions is a scientific theory. In science, a theory is not merely a conjecture or an assumption; it is a well-substantiated explanation of natural phenomena that is supported by rigorous experimental testing and consistent conclusions.

Scientific theories are based on empirical observations, logical reasoning, and mathematical models, and they are subject to modification or rejection when new evidence emerges that contradicts them. Scientific theories, in contrast to scientific laws, explain why things happen rather than simply describing what happens.

They are typically tested through experiments or observations that are designed to test the predictions generated by the theory, and they are subjected to peer review by other scientists to ensure that the methods used are rigorous and the conclusions drawn are sound.

Scientific theories are critical to our understanding of the natural world because they provide explanations for why things happen and enable us to predict what will happen under specific conditions. They are also essential for the development of new technologies and for the advancement of human knowledge.

For example, the theory of evolution provides an explanation for how life on Earth has changed over time, and this has led to the development of new medical treatments and the discovery of new organisms.

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Who ever gets it right I will give 20 points and Brainly

Who ever gets it right I will give 20 points and Brainly

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Answer:

the reflection of the candle in the concave mirror formed upside down real image that is diminished

a 3.5 kg mass has an initial velocity of 4.0 m/s. How much force is required to increase the velocity of the mass to 8.0 m/s in 3.0 seconds?

Answers

Answer:

4.67 N of force are required

Explanation:

The second Newton's law states the net force exerted on a body of mass m that has an acceleration a, is given by:

F=m.a

On the other hand, the kinematics equations relate the acceleration with the change of speed over time, expressed as:

\(\displaystyle a=\frac{v_f-v_o}{t}\)

We are given the initial speed of vo=4 m/s on a mass of m=3.5 Kg, the final speed of vf=8 m/s which took t=3 seconds.

The acceleration is:

\(\displaystyle a=\frac{8-4}{3}=1.33\)

\(a=1.33\ m/s^2\)

Thus, the force is:

\(F=3.5\ Kg\cdot 1.33\ m/s^2\)

\(F=4.67\ N\)

4.67 N of force are required

a. They are measured from the Prime Meridian in a and direction. These lines are known also as

Answers

Answer:

meridians

     Imaginary lines called meridians that measure distances East and West of the Prime Meridian. Longitude is different from latitude. Longitude may also be referred to as meridians. Although they measure the distance from East and West, the lines run in the direction of north and south.

Explanation:

hope this helps you if it does please mark brainiest

Q2 (a) A radar, with coordinates (0,0), has coverage with length of d. While the second radar, with identical coverage, is situated on the east side of the first one. Using signal intersection, both radars detect an object coming closer to the southern direction in the first quadrant. Note that radars swap the covered area into circles.
i) Identify position of the object in terms of distance and angle. Complete your answer with a sketch.
ii) Analyze and calculate the overlapping area from the radar signals intersection at the first quadrant.

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Considering the coordinates of the radars as well as the direction of the object in order to determine the object's position in terms of distance and angle. Sincе thе radars arе situatеd at (0,0) and thе sеcond radar is on thе еast sidе of thе first onе, wе can assumе that thе first radar is locatеd on thе x-pivot and thе sеcond radar is locatеd on thе positivе y-hub.

Lеt's say thе objеct is dеtеctеd at coordinatеs (x, y). The objесt's y-coordinativity will be negative and its x-coordinativity positive as it approaches the southern direction in the first quadrant.

We can use the distancе formula to determine the object's diameter from its origin (0, 0):

Distancée = (x + y) 2 The angle can be calculated with trigonometry. The angle can be summarized as:

= arctan(y/x) ii) We must consider the circles of overlap for each radar in order to calculate the overlap from the radar signal intersection in the first quadrant.

Due to the fact that both radars have distinctive overlap and divide the covered area into circles, the overlapped area will be the intersection of these circles.

Thе ovеrlapping arеa can bе calculatеd by finding thе arеa of thе intеrsеction of two circlеs. The formula for the area of the intersection of two circles can be complex and depends on the specific radii and dimensions that exist between the circles' centers.

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How much force is needed to keep the 750000 Newton Space Shuttle moving at a constant speed of 28000 km/h, in a straight line?

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The force needed to keep the space shuttle moving at constant speed is 0.

The given parameters;

weight of the space shuttle, F = 750,000 Nconstant speed of the space shuttle, v = 28,000 km/h

The mass of the space shuttle is calculated as follows;

\(W = mg\\\\m = \frac{W}{g} \\\\m = \frac{750,000}{9.8} \\\\m = 76,530.61 \ kg\)

The force needed to keep the space shuttle moving at constant speed is calculated as follows;

\(F = ma\)

\(F = 76,530.61 \times a\)

where;

a is the acceleration of the space shuttle

At a constant speed, acceleration is zero.

F = 76,530.61 x 0

F = 0

Thus, the force needed to keep the space shuttle moving at constant speed is 0.

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What is the resultant of the vectors shown?

What is the resultant of the vectors shown?

Answers

Answer:

b

Explanation:

your welcome :)

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