a motorcycle travels 450 km in 5 hours. What is the average speed of this motorcycle?​

The area of reaserch in which Kepler worked is the area of  the retrograde motion of the sun.

Kepler is most known for his popular laws that deal with the idea of planatary motion. There are three laws of planetary motion as described by Kepler.

Hence, the area of reaserch in which Kepler worked is the area of  the retrograde motion of the sun.

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Answer:

its actually D.the retrograde motion of mars

The electric field inside the dome of a highly-charged van de graaff generator is ZERO.

Van de Graaff generators are electrostatic generators and partial accelerators that store direct current on a hollow sphere by creating a strong electric field. With a potential difference of up to 5 megavolts, it is a partial accelerator.

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Answer:

R = 22 Ω

P = 0.10 W

P = (ΔV)^2 / R

0.10 = (x)^2 / 22

x = 1.5

ΔV = 1.5 V

Explanation:

The friction force acting on the firefighter sliding down a vertical pole is approximately 222.6 N.

To find the friction force, we need to analyze the forces acting on the firefighter. In this case, the firefighter is sliding down a vertical pole, so the gravitational force (mg) is acting downward. Additionally, there is a friction force (f) acting in the upward direction opposing the motion.

According to Newton's second law, the net force acting on an object is equal to the product of its mass and acceleration. In this case, the net force is the difference between the gravitational force and the friction force:

Net force = mg - f

Given:

Mass of firefighter (m) = 78 kg

Acceleration (a) = 3.0 m/s²

We can rearrange the equation to solve for the friction force:

f = mg - ma

Substituting the given values, we have:

f = (78 kg)(9.8 m/s²) - (78 kg)(3.0 m/s²)

Calculating the expression, we find that the friction force is approximately 222.6 N.

Therefore, the friction force acting on the firefighter sliding down the vertical pole is approximately 222.6 N. It opposes the motion and helps control the acceleration of the firefighter.

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Answer:

A and C

Explanation:

The easiest way to solve this is by drawing a new triangle, one where one leg is clearly longer than the other.  This way, it is easy to see which angles match.

Or, using geometry, we can show that C = θ since they are alternate interior angles.  Since C is complementary to the angle between the rays, and A is also complementary to the angle between the rays, then A = C, so A = θ.

Answer:

Moons’ gravitational strength = weight of astronaut on the moon / mass of astronaut.

= 150 / 90 = 1.67 Nkg-1

Explanation:

Answer:

4

(m)

2 ( s )

Explanation:

ok...........

Newton's first law of motion is also known as the law of inertia. Newton's first law applies whether the object is in motion or not.

Objects do not change motion unless a force is applied. The second law states that the force on an object is equal to its mass times its acceleration. The third law states that when two objects interact, forces of equal magnitude and opposite directions are applied to each other. The law of motion shown in the picture is Newton's first law of motion.

According to Newton's first law of motion, a person at rest does not change motion until some pressure is applied. Newton's first law of motion describes how inertia affects moving and stationary bodies. Newton's first law states that an object will either remain stationary or move in a straight line with constant velocity unless an unbalanced force acts on it. Another name for Newton's second law is the law of force and acceleration.

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When magnets are pushed together, the north poles of one magnet will repel the north pole of the other magnet, and the south pole of one magnet will repel the south pole of the other magnet. This is known as repulsion.

When magnets are let go after being pushed together, they will naturally move away from each other as the repulsion force is no longer being applied. This is known as "releasing."

When two magnets are brought close to each other, the invisible lines of magnetic force, called magnetic fields, interact with each other. Opposite poles, such as the north pole of one magnet and the south pole of another magnet, are attracted to each other. This phenomenon is known as attraction. On the other hand, similar poles, such as the north pole of one magnet and the north pole of another magnet, will push away from each other. This is known as repulsion.

When magnets are pushed together, the repulsion force between them is greater than the attraction force. This is why they will move away from each other when they are let go. However, if the magnets are very strong or if they are physically prevented from moving away from each other, they will not move away from each other when they are let go.

In addition to this, the strength of the magnetic field decreases as you move farther away from the magnet, so the farther apart the magnets are, the weaker the force of attraction or repulsion between them will be.

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Attraction between people is Gravitation while people and earth is Gravity.

Every body in the universe attracts every other body with a force called force of gravitation. The attraction between sun and earth , attraction between table and chair lying in a room ..etc. are examples of gravitation. Gravitation is the weakest of four basic forces in nature. However , its most important force as it has its contribution in initiating the birth of stars and controlling the structure and evolution of entire universe.

Gravity is the special case of gravitation. If one of the attraction body is earth then gravitation is gravity.

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Answer:

I think your answer might be letter C

Explanation:

If it is wrong I am so sorry forgive me if it is wrong let me know please ok.

Answer:

when waterways are polluted it affects all forms of life in the area - including us

expression:

for example when Lakes streams and ponds are polluted it can kill or harsh fish and other Wildlife that lives there!

hope that helps !

The objective's focal length is roughly -15.31 cm. The converging lens objective is indicated by the negative sign.

The formula for compound microscope magnification can be used to get the focal length of the objective:

M = -(f₀ / fₑ)× (1 + d / f₀)

Where:

M = Magnification of the compound microscope = -4515 (negative sign indicates an inverted image)

f₀ = Focal length of the objective

fₑ = Focal length of the eyepiece = 2.6 cm

d = Distance between the objective and eyepiece = 16 cm

f₀ = -(M * fₑ) / (M + (d / fₑ))

Putting all the given values:

M = -4515

fₑ = 2.6 cm

d = 16 cm

f₀ = -((-4515) × 2.6) / (-4515 + (16 / 2.6))

f₀ ≈ -15.31 cm

Therefore, the objective's focal length would be roughly -15.31 cm and the converging lens objective will be indicated by the negative sign.

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The polythene strip and the perspex rod fly apart because of the force of repulsion between the similar charges. The ends of the strip stick to the rod because of the force of attraction between opposite charges.

When the strip is rubbed against a material, it becomes negatively charged and when the perspex rod is rubbed against a duster it becomes positively charged. When the strip is let go after being rubbed, the negative charges on the strip repel each other, causing the strip to fly apart. This is an example of Coulomb force at work.

The ends of the strip stick to the rod because of the force of attraction between opposite charges. When the strip is rubbed against a material, it becomes negatively charged and when the perspex rod is rubbed against a duster it becomes positively charged. Because opposite charges attract each other, the negative charges on the strip are attracted to the positive charges on the rod, causing the ends of the strip to stick to the rod. This is an example of Coulomb force at work.

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The peak current for this circuit is A. 3.5 μA

To find the peak current in a series LRC circuit with given values, we first need to determine the impedance (Z) of the circuit. We can use the following formula,

Z = √(R² + (XL - XC)²)

where,
R = resistance,
XL = inductive reactance
XC = capacitive reactance.

We can calculate the XL and XC as follows,
XL = 2 * π * f * L
XC = 1 / (2 * π * f * C)

The given values are:
f = 197 kHz (frequency)
R = 41 kΩ (resistance)
C = 14 μF (capacitance)
L = 63 H (inductance)

Now, we can calculate XL and XC:

XL = 2 * π * 197000 * 63 ≈ 77.5 MΩ
XC = 1 / (2 * π * 197000 * 14 * \(10^{(-6)}\)) ≈ 57.4 Ω

Next, we find the impedance (Z):

Z = √((41000)² + (77500000 - 57.4)²) ≈ 77.5 MΩ

Now we can calculate the peak current (I_peak) using Ohm's Law:

I_peak = V_peak / Z

I_peak = 270 V / 77.5 MΩ ≈ 3.48 μA

Therefore, the peak current for this circuit is approximately 3.5 μA, which corresponds to option A.

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The ball's velocity at the bottom of the hill is 12.6 m/s. The direction of a body or object's movement is defined by its velocity. In its basic form, speed is a scalar quantity.

Velocity can be defined as the rate at which something moves in a specific direction. as the speed of a car driving north on a highway or the pace at which a rocket takes off. Because the velocity vector is scalar, its absolute value magnitude will always equal the motion's speed. Additionally, it is inversely proportional to transit duration and proportionate to displacement. Its measurement is in meters per second (m/s). The velocity formula is shown below: V = s/t.

Where V is the end velocity, u the beginning velocity, a the acceleration, and t the duration,

We obtain the response by substituting the data. 12.6 m/s.

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The angle A using the appropriate sine or cosine law is 43.29 degrees.

To find angle A, we can use the cosine law, which states that $a^2 = b^2 + c^2 - 2bc \cos{A}$. We have $b=5.3$, $c=7$, and $a=8.2$, so we can plug in and solve for $\cos{A}$:$$8.2^2 = 5.3^2 + 7^2 - 2(5.3)(7) \cos{A}$$$$\cos{A} = \frac{8.2^2 - 5.3^2 - 7^2}{-2(5.3)(7)} = 0.509$$$$A = \cos^{-1}{(0.509)} \approx 43.29^\circ$$The length of side x using the appropriate sine X is 61.32 units.

We can use the sine law, which states that $\frac{a}{\sin{A}} = \frac{b}{\sin{B}} = \frac{c}{\sin{C}}$. We know that $A=101^\circ$ and $a=x$, so we can use the ratio $\frac{a}{\sin{A}}$ to solve for $x$:$$\frac{x}{\sin{101}} = \frac{c}{\sin{38}}$$$$x = \sin{101} \cdot \frac{c}{\sin{38}} \approx 61.32$$Therefore, the length of side x is approximately 61.32 units.

In geometry, the Cosine Decide says that the square of the length of any side of a given triangle is equivalent to the amount of the squares of the length of different sides short two times the result of the other different sides duplicated by the cosine of point included between them.

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Answer:

The order of steps for writing a chemical formula is 3, 2, 1, 5, 4

Explanation:

Balance the charges. Identify the negative ion and charge. Identify the positive ion and charge. Use the information in the ratio to write the chemical formula. Write the ratio of ions that balances the charges.

The order of steps for writing a chemical formula from the options above is:

3.) Identify the positive in and charge.

2.) Identify the negative ion and charge.

1.) Balance the charges.

5.)Write the ratio of ions that balances the charges.

4.) Use the information in the ratio to write the chemical formula.

Answer:

Explanation:

this is my android auto

The scale will read 8,996 N during the acceleration.

The force applied to the woman by the scale is the sum of her weight and the weight of the elevator and scale (66.0 kg + 784 kg = 850.0 kg). This can be calculated using the equation

Force = Mass x Acceleration (F = ma).

The acceleration is given by the force applied (9030 N) divided by the total mass (850.0 kg), which gives a result of 10.6 m/s2.

We then multiply this acceleration by the mass of the woman (66.0 kg) to get the force applied to the woman by the scale, which is 696 N.

We then add this to the weight of the elevator and scale (784 kg) to get the total force that the scale reads, which is 8,996 N.

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Answer:

On the other hand, acceleration is inversely proportional to the mass of the body being accelerated. That is, the greater the mass, the less acceleration.

Explanation:

Answer:cross-sectional area, and thus surface area, increases the amount of air resistance an object experiences

Explanation:

Answer:

b. 220 V

Explanation:

Let resistors be R1, R2, and R3 respectively.

Given the following data;

R1 = 20 ohms

R2 = 30 ohms

R3 = 60 ohms

Current = 2 Amperes

To find the voltage;

First of all, we would determine the total effective resistance (RT).

For series circuit;

RT = R1 + R2 + R3

RT = 20 + 30 + 60

RT = 110 Ohms

Next, we find the voltage using the formula;

Voltage = current * resistance

Voltage = 2 * 110

Voltage = 220 Volts

In order to turn a star's proper motion into its space velocity, we must also know its distance and radial velocity (Option B).

Proper motion is the apparent motion of a star across the sky, and it is determined by observing the star at two different times and measuring its change in position. However, proper motion alone does not give us enough information about a star's actual motion through space. To calculate a star's space velocity, we also need to know its distance from Earth and its radial velocity, which is its motion towards or away from us along our line of sight.
Knowing a star's distance is crucial because it allows us to determine how much its proper motion is affected by our own motion around the Sun. Radial velocity is also important because it tells us whether a star is moving towards or away from us, and by how much. By combining a star's proper motion, distance, and radial velocity, we can calculate its true motion through space.
While a star's mass, spectral type, temperature, and age can provide valuable information about its physical properties and behavior, they are not directly necessary for determining its space velocity from proper motion. However, they may be used in other contexts, such as studying the dynamics of star clusters or analyzing the orbits of binary star systems.

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About 400.00 Meters per second.

(Think i may have gotten my decimal in the wrong place. If not then 4)

Answer:

14.40 km/h (kilometers per hour)

240.00 m/min (meters per minute)

Best answer: 4.00 m/s (meters per second)

Explanation:

Answer:

A is the answer!

Explanation:

Edge 2021

Answer:

A

Explanation:

Edge

Answer:

27.4

Explanation:

(13+43+12+3+66)/5

137/5

27.4

Answer:

27.4 because you add them all together and divide the number you get by 5

Answer: 8.6m/s

Explanation:From KE=1/2mv^2

In order to make v the subject of the formula we divide both sides by 1/2m. Thus V^2 will be left alone on the RHS. But we are looking for v and not v^2. Thus we find the square root of KE1/2m

Meaning V= sqrt[3000÷1/2 of 80]

=sqrt[3000÷40]

=sqrt(75)

=8.6m/s

Answer:

Key Takeaways: Metallic Character​​ These properties include metallic luster, formation of cations, high electrical and thermal conductivity, and ...

Explanation:

The atoms with the strongest metallic properties on the periodic table are found in upper left corner of periodic table. The correct option is A.

The upper left corner of the periodic table is typically where one can find the atoms with the strongest metallic properties. Alkali metals and alkaline earth metals which are renowned for their high electrical conductivity, luster and malleability are found in this region. These elements are easy to lose and easily form positive ions because they have few valence electrons in their outermost energy levels.

Due to growing atomic size and declining electronegativity, metallic properties tend to become more noticeable as you move down and to the left in this region. On the other hand nonmetals and metalloids with stronger nonmetallic properties such as high electronegativity and poor electrical conductivity make up the lower right region.

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