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3 years ago

As the distance between two objects increases,what happens to the gravitational force

1 answer:

3 0

As the radial distance between two objects increases, the gravitational force which pulls the two towards each other decreases following the inverse square law. This is based on Newton's Law of Universal Gravitation, which as an equation states $F_{g} = \frac{Gm_{1}m_{2}}{r^2}$ . If the distance between the two is doubled, the force of gravity is only 1/4 as strong. If it is tripled, it is only 1/9 as strong, and so on.

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Light waves are bent more easily than sound waves true or false

frez [133]

The answer is false

8 0

3 years ago

Kepler's laws, satellites motion and weightlessness

Anon25 [30]

Answer:

First Kepler law states that Each planet describes an ellipsoidal motion about the sun as its single focus.

Second Kepler law states that An imaginary line joining a planet to the Sun sweeps out equal areas in equal time intervals.

Third Kepler law states that The squares of period of revolution of the planet around the sun are proportional to the cubes of mean distance between the planet and the sun.

Weightlessness is the condition where the body has zero gravity ( its acceleration is equal to the acceleration due to gravity )

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3 years ago

In an electroplating process, copper (ionic charge +2e, atomic weight 63.6 g/mol) is deposited using a current of 10.0 A. What m

statuscvo [17]

Answer:

1.974 g

Explanation:

Electrochemical equivalent of copper, z = 0.000329 g/C

I = 10 A

t = 10 minutes = 10 x 60 = 600 seconds

By the use of Farady's law of electrolysis

m = z I t

m = 0.000329 x 10 x 600

m = 1.974 g

5 0

3 years ago

A proton is released from rest at the origin in a uniform electric field that is directed in the positive x direction with magni

Vika [28.1K]

Explanation:

It is given that,

Electric field, $E=950\ N/C$

We need to find the change in the electric potential energy of the proton-field system when the proton travels to x = 2.5 m

From the conservation of energy, the loss in potential energy is equal to the gain in kinetic energy and kinetic energy is is equal to the work done.

$W=F\times x$

$W=q\times E\times x$

$W=1.6\times 10^{-19}\times 950\times 2.5$

$W=3.8\times 10^{-16}\ J$

So, the change in electric potential energy of the proton field system is $3.8\times 10^{-16}\ J$ . Hence, this is the required solution.

4 0

3 years ago

Lexy throws a dart with an initial velocity of 25m/a at an angle of 60 degrees relative to the ground. What is the approximate v

butalik [34]

Initial velocity = 25 m/s, angle 60°

sin (60°) = opposed leg / hypothenuse = Vertical velocity / Initial velocity

=> Vertical velocity = initial velocity * sin (60°) = 25 m / s * 0.866 = 21.65 m/s

7 0

3 years ago