Knowing that 1 inch is equal to 2.54 centimeters, convert 287 cm to inches.

Answer:

he magnetic field is greater because the magnetization of the material is added

Explanation:

The magnetic field in a solenoid is given by the relation

          B₀o = μ₀ n I

where n is the density of turns and I the current

When we put a magnetic material inside solenoid

the magnetic field is

         B = B₀ + μ₀ M

where M is called the magnetization of the material and corresponds to the alignment of the magnetic moments of the atoms with the field, therefore the total field is much greater, it should be noted that the part of Bo increases with the current, but the magnetization has a maximum value.

Consequently the magnetic field is greater because the magnetization of the material is added

The velocity after 1.5seconds is 0.3 m/s.

The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.

Initial upward velocity: u = 15 m/s.

Time interval: t = 1.5 second.

Acceleration due to gravity acting downward is = 9.78 m/s².

Let the final velocity is v.

Therefore,

v = u -gt

= (15 - 9.8 × 1.5) m/s

= 0.3 m/s.

So, the velocity after 1.5seconds is 0.3 m/s.

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Answer:

8.33 m/s^2

Explanation:

The equation for force is Force = mass * acceleration. The force is 500 N, and the mass is 60 kg, so substituting those into the equation you get that 500 = 60 * acceleration. Divide 500 by 60 to get the acceleration, which is 8.33 m/s^2.

Hope this helps! Let me know if you have any confusion!

Answer:

When atoms from different elements are joined together in groups, they form molecules. The atoms in molecules bind together chemically, which means that the atoms cannot be separated again by physical means, such as filtration. The molecule has different properties from the elements from which is was made.

Explanation:

Given :

Vector A has a magnitude of 63 units and points west, while vector B has the same magnitude and points due south.

To Find :

The magnitude and direction of

a) A + B .

b) A - B.

Solution :

Let , direction in north is given by +j and east is given by +i .

So , \(A=-63i\) and \(B=63j\)

Now , A + B is given by :

\(A+B=-63i+63j\)

\(| A+B | = 63\sqrt{2}\)

Direction of A+B is 45° north of west .

Also , for A-B :

\(A-B=-63i-63j\)

\(|A-B|=63\sqrt{2}\)

Direction of A-B is 45° south of west .

( When two vector of same magnitude which are perpendicular to each other are added or subtracted the resultant is always 45° from each of them)

Hence , this is the required solution .

Answer:

the sum of all biological processes by which particular characteristics are transmitted from parents to their offspring

Answer:

i think about 225-250 million years

Explanation:

Bottom line: The planets in our solar system orbit (revolve) around the sun, and the sun orbits (revolves) around the center of the Milky Way galaxy. We take about 225-250 million years to revolve once around the galaxy's center. This length of time is called a cosmic year.

Answer:

Yes,in fact visible 'light' is a form of radiation, which can be defined as an energy that travels in the form of electromagnetic waves. It can also be described as a flow of particle-like 'wave-packets', called photons, that travel constantly at the speed of light (about 300 000 kilometres per second).

Explanation:

Answer:

Freefall is a special case of motion with constant acceleration because acceleration due to gravity is always constant and downward. This is true even when an object is thrown upward or has zero velocity.

When a ball is thrown up in the air, its velocity is initially upward. Since gravity pulls the object toward the earth with a constant acceleration g, the magnitude of velocity decreases as the ball approaches maximum height. At the highest point in its route, the ball has zero velocity, and the magnitude of velocity increases again as the ball falls back toward the earth.

Answer:

Acceleration from gravity is always constant and downward, but the direction and magnitude of velocity change. At the highest point in its trajectory, the ball has zero velocity, and the magnitude of velocity increases again as the ball falls back toward the earth

Explanation:

The uncertainty in the electron's speed is approximately 3.87 × \(10^4}\) m/s.

According to the Heisenberg uncertainty principle, there is a fundamental limit to the precision with which certain pairs of physical properties, such as position and momentum, can be known simultaneously. The uncertainty principle states that the product of the uncertainties in the measurements of position (Δx) and momentum (Δp) must be greater than or equal to Planck's constant divided by 4π.

Mathematically, the uncertainty principle is expressed as

Δx * Δp \(\geq\) h / (4π)

Here, Δx represents the uncertainty in position, and Δp represents the uncertainty in momentum. However, momentum can be calculated using the equation

momentum (p) = mass (m) * velocity (v)

Rearranging the equation, we have

velocity (v) = momentum (p) / mass (m)

To determine the uncertainty in speed, we need to calculate the uncertainty in velocity. Assuming we are dealing with an electron, we can use the known mass of an electron (m) and the uncertainty principle.

The mass of an electron (m) is approximately 9.10938356 × \(10^{-31}\) kg, and Planck's constant (h) is approximately 6.62607015 × \(10^{-34}\) J·s.

Given the uncertainty in position (Δx) of 12 nm (converted to meters)

Δx = 12 nm = 12 × \(10^{-9}\) m

Using the uncertainty principle equation, we can solve for Δp

Δx * Δp  \(\geq\)  h / (4π)

(12 × \(10^{-9}\)) * Δp  \(\geq\)  (6.62607015  × \(10^{-34}\)) / (4π)

Δp  \(\geq\)  (6.62607015 × \(10^{-34}\)) / (4π * 12 × \(10^{-9}\))

Δp  \(\geq\)  3.527 × \(10^{-26}\) kg·m/s

Now, we can calculate the uncertainty in velocity (Δv) by dividing the uncertainty in momentum (Δp) by the mass of the electron (m):

Δv = Δp / m

Δv = (3.527 × \(10^{-26}\) ) / (9.10938356 × \(10^{-31}\))

Δv = 3.87 × \(10^4}\)  m/s

Therefore, the uncertainty in the electron's speed is approximately 3.87 × \(10^4}\) m/s.

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Answer: The answer is B Hope this helps

Explanation:

An astronomical object is also called a celestial object. It is a naturally occurring physical entity. They are complex, have diverse structures and weights. They even have substructures.

Hence the option B is correct.

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Answer:

The answer is

Explanation:

The velocity or speed of an object can be found by using the formula

\(velocity \: = \frac{distance}{time} \)

From the question

time taken to travel = 10 hours

distance covered = 550 miles

Substitute the values into the above formula and solve for the velocity

That's

\(velocity = \frac{550}{10} \)

We have the final answer as

Hope this helps you

The electric flux through a square having sides of length a that is located 1/3 of the distance between the left and right surfaces can be calculated as follows Now, consider the following two statements:

In a static equilibrium situation, there can be no electric field inside the conductor. Let us consider the segment AB of the surface1 such that point A is at the edge of the square and point B is in the middle of the segment joining the two surfaces. Since the surface is at the same potential, the potential difference between A and B is zero. Let C be the point where the perpendicular bisector of AB meets the surface2. .

By statement 2, there is no electric field inside the conductor and hence there is no potential difference inside the conductor. Therefore, the potential difference between A and C is equal to the potential difference between B and C which is of the potential difference between the surfaces. Let the potential difference between the surfaces be V.

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Answer:

At neutron star density, the Earth's whole mass would fit inside a 305-meter-diameter sphere.

Explanation:

Answer: A. Objects 1 and 2 will not move, and objects 3 and 4 will accelerate upward.

Explanation:

Because objects 1 and 2 require more force in order to move, they will stay motionless.

Correct me if I am incorrect.

Answer:

Striking the head of the drum changes its shape and compresses the air inside the shell. The compressed air presses on the bottom head and changes its shape. Then, these changes are transmitted to the drum shell and reflected back, and this action is repeated, creating a vibration. These vibrations of the top and bottom heads create vibrations in the air, which become sound, and eventually, as the head vibrations are dampened, the sound diminishes.

Explanation:

Answer: A.

Explanation: I’m pretty sure that’s it, but I’m not 100% sure. But that’s the best option.

Answer:

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Changes to temperature or pH can change enzyme activity due to the fact that enzymes are sensitive to their environment. As the temperature or pH of the environment is altered, the structure of the enzyme molecule can be affected, leading to changes in enzyme activity.

Changes to temperature or pH can affect enzyme activity because they can alter the structure of the enzyme. Enzymes are proteins, and their structure is crucial to their function. Changes to temperature can cause enzymes to denature, or lose their structure, which in turn affects their ability to catalyze reactions. Similarly, changes to pH can also affect the structure of the enzyme, as it can change the charges on the amino acids that make up the enzyme. This can also lead to a loss of function. Therefore, it is important for enzymes to be in an environment with the optimal temperature and pH for them to function properly.

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I suggest that the students move forward with option A.

Test funnels of the same size and material with varying sized openings. This will allow them to determine the optimal size for the opening that will help direct the marble to the launch pad. Once they have determined the optimal size, they can move forward with constructing the funnel with that size opening.

Answer:

The kinetic energy of a moving object is directly proportional to its mass and directly proportional to the square of its velocity. This means that an object with twice the mass and equal speed will have twice the kinetic energy while an object with equal mass and twice the speed will have quadruple the kinetic energy.

The work done against gravity to lift the solid rectangular box to its final position is 439,040 J.

Volume of the box can be calculated as follows:Volume = Base area × Height = (2 m × 2 m) × 4 m = 16 m³Since density = Mass/Volume, we can rearrange this formula to find the mass: Mass = Density × VolumeTherefore, the mass of the box is: Mass = 700 kg/m³ × 16 m³ = 11,200 kg

Now, we need to find the work done against gravity to lift the box to its final position. The formula for work done against gravity is: W = F × d × cos θ where W is the work done, F is the force required, d is the distance moved, and θ is the angle between the force and the direction of movement.In this case, the force required is the weight of the box,

which can be calculated using the formula: F = m × g where m is the mass of the box and g is the acceleration due to gravity, which is approximately 9.8 m/s². Therefore: F = 11,200 kg × 9.8 m/s² = 109,760 N The distance moved is the height of the box, which is 4 m. The angle between the force and the direction of movement is 0°, since the force is acting directly upwards.

Therefore, θ = 0°.Substituting these values into the formula for work done against gravity, we get: W = 109,760 N × 4 m × cos 0° = 439,040 J  

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The concentrated reaction to the column due to the weight of the slab on a single level is 37,500 lb.

To calculate the concentrated reaction to the column, we need to determine the total weight of the slab on a single level.

Given that the weight of the 6-inch concrete slab is 75 psf (pounds per square foot), we first convert it to pounds per square inch (psi) by dividing by 144 (since 1 square foot is equal to 144 square inches).

Weight of slab per unit area = 75 psf / 144 = 0.5208 psi

Next, we calculate the area of the slab on a single level by multiplying the spacing in the long direction (25 ft) by the spacing in the short direction (20 ft).

Area of slab = 25 ft * 20 ft = 500 sq. ft

Finally, we multiply the weight per unit area by the area of the slab to find the total weight of the slab on a single level.

Total weight of slab = 0.5208 psi * 500 sq. ft = 260.4 lb

Therefore, the concentrated reaction to the column due to the weight of the slab on a single level is 37,500 lb.

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The information given on the X-axis of the graph attached is the years from 1920-2005 (option B).

A graph in mathematics or statistics is a data chart (graphical representation of data) intended to illustrate the relationship between a set (or sets) of numbers (quantities, measurements or indicative numbers) and a reference set.

A graph consists of two axes namely; X-axis and Y-axis. The x-axis on a graph is usually drawn left to right and usually shows the range of values of an independent variable.

On the other hand, the Y-axis is the axis on a graph that is usually drawn from bottom to top and usually shows the range of values of variable dependent on one other variable.

Therefore, according to the graph illustrated above, the x-axis shows the years from 1920-2005.

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The final momentum of the two bodies in a completely inelastic one-dimensional collision can be determined by using the principle of conservation of momentum.

When two bodies collide in a completely inelastic one-dimensional collision, they stick together and move with a common velocity after the collision. In such a collision, the principle of conservation of momentum is applicable. According to this principle, the total momentum of the system before the collision is equal to the total momentum of the system after the collision. Therefore, we can write:Initial momentum of body 1 + initial momentum of body 2 = final momentum of the combined system .Therefore, P1i + P2i = Pfwhere P1i and P2i are the initial momenta of the two bodies and Pf is their final momentum after collision.

Given that the initial momenta of the two bodies are:(a) P1i = 10 kg.m/s and P2i = 0(b) P1i = 10 kg.m/s and P2i = 4 kg.m/s(c) P1i = 10 kg.m/s and P2i = -4 kg.m/sFor each case, we can find the final momentum of the combined system as follows:(a) P1i + P2i = Pf10 kg.m/s + 0 = PfPf = 10 kg.m/sThe final momentum of the combined system is 10 kg.m/s.(b) P1i + P2i = Pf10 kg.m/s + 4 kg.m/s = PfPf = 14 kg.m/sThe final momentum of the combined system is 14 kg.m/s.(c) P1i + P2i = Pf10 kg.m/s + (-4 kg.m/s) = PfPf = 6 kg.m/sThe final momentum of the combined system is 6 kg.m/s.

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Light with a 660 nm wavelength has more energy than light with a 580 nm wavelength.

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The average speed for the entire journey is 48 km/hr.

The average speed is the sum distance which is traveled by the object in a particular time interval, as the average speed is a scalar quantity and it is presented by the magnitude and has no direction.

here the first speed v₁ is 60 km/hr and the second speed v₂ is the 40 km/hr .So,  The formula we are referring to for calculating the average  speed

  S = 2v₁v₂/(v₁+v₂)

here,   v₁+v₂ =  60+40 =100

Now substituting the desired values  in the formula  

        =  2 x 60 x40/(100)

       =  4800/100

       = 48 km/hr

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Answer:

both

Explanation:

You'll use less water....less hot water   so water and energy are saved

you start running at a speed of 2.65 m/s. it takes you 13.5 s to catch up and deliver the lost wallet. The person in front was 28.35 meters ahead of you when you started running to catch up and return their wallet.

When walking at a speed of 1.25 m/s, the distance between the two people remains the same, so we can assume that the person in front was also walking at the same speed of 1.25 m/s. When you start running at a speed of 2.65 m/s, you cover the same distance in a shorter amount of time, allowing you to catch up to the person in front. To calculate the distance between you and the person in front before you started running, we can use the formula:
distance = speed x time
When walking, the distance between you and the person in front remains constant, so we can calculate the distance using:
distance = speed x time
distance = 1.25 m/s x t
When running, you cover the same distance in a shorter amount of time, so we can calculate the distance using:
distance = speed x time
distance = 2.65 m/s x 13.5 s
Since the distance is the same in both cases, we can set them equal to each other and solve for t:
1.25 m/s x t = 2.65 m/s x 13.5 s
t = (2.65 m/s x 13.5 s) / 1.25 m/s
t = 22.68 s
Therefore, the person in front was walking for 22.68 seconds before you started running. To calculate the distance, we can plug in the value of t into the first equation:
distance = 1.25 m/s x t
distance = 1.25 m/s x 22.68 s
distance = 28.35 meters
Therefore, the person in front was 28.35 meters ahead of you when you started running to catch up and return their wallet.

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A student is pulling a wagon and records the force vs time values in the table, then the acceleration of the wagon would remain constant, therefore the correct answer is option D.

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

As given in the problem if a student is pulling a wagon and records the force vs time values in the table,

As the Force of the pulling is constant and assuming the mass of the wagon to be constant the acceleration of the wagon would not change.

Thus, the correct answer is option D.

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The question is incomplete, the complete question is,

A student is pulling a wagon and records the force vs time values in the table, which of the following will also remain constant for the wagon

A. Displacement

B. velocity

C. Momentum

D. Acceleration