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3 years ago

Two cars of mass 3000 kg are 2 m apart. what is the force of gravity between them ?

Physics

1 answer:

Vikki [24]3 years ago

4 0

Answer:

2 m apart

Explanation:

Two cars of mass 3000 kg are 2 m apart what is the force of gravity between them using The universal law of gravitation

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Assume the motion when you are in the car or in the school bus to go to the school.

To describe the motion the first thing you need is a point of reference. Assume this is your house.

This should be a description:

When you are sitting and the car has not started to move you are at rest.

The car starts moving from rest, gaining speed, accelerating. You start to move away from your house, with a positive velocity (from you house to your school) and positive acceleration (velocity increases).

The car reaches a limit speed of 40mph, and then moves at constant speed. The motion is uniform, the velocity is constant, positive, since you move in the same direction), and the acceleration is zero.

When the car approaches the school, the driver starts to slow down. Then, you speed is lower but yet the velocity is positive, as you are going in the same direction. The acceleration is negative because it is in the opposite direction of the motion.

When the car stops, you are again at rest: zero velocity and zero acceleration.

In all the path your velocity was positive, constant at times (zero acceleration) and variable at others (accelerating or decelerating).

When you comeback home, then you can start to compute negative velocities, as you will be decreasing the distance from your point of reference (your house).

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3 years ago

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Charge . . . +2 elementary charges

Mass . . . 4 Atomic Mass Units

Relative penetrating power . . . low

The effect an electric field would have on it . . . Since the alpha particle has a positive charge, it's repelled by other positive charges, and attracted toward negative charges.

Beta radiation: Particles. Each beta particle is an electron.

Charge . . . -1 elementary charge

Mass . . . 0.00055 AMU

Relative penetrating power . . . medium

The effect an electric field would have on it . . . repelled by other negative charges, and attracted toward positive charges.

Gamma radiation: electromagnetic wave, verrrrry short wave, high frequency

Charge . . . electromagnetic wave, no charge

Mass . . . electromagnetic wave, no mass

Relative penetrating power . . . high

The effect an electric field would have on it . . . electromagnetic wave, no effect

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3 years ago