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3 years ago

How does the force of gravity between two bodies change when the distance between them doubles?

Physics

1 answer:

polet [3.4K]3 years ago

7 0

Answer:

If the distance is doubled, the force of gravity between the two bodies is one-fourth as strong as before

Explanation:

The force of gravity between two bodies depends on the mass and distance. But we will focus on distance since that's what the question asks

Therefore, the force of gravity decreases as distance between the bodies increases.

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According to Kepler's Second Law the radius vector drawn from the Sun to a planet Multiple Choice is the same for all planets. s

Mademuasel [1]

Answer:

sweeps out equal areas in equal times.

Explanation:

As we know that there is no torque due to Sun on the planets revolving about the sun

so we will have

$\tau_{net} = 0$

now we have

$\frac{dL}{dt}= 0$

now we also know that

$Area = \frac{1}{2}r^2d\theta$

so rate of change in area is given as

$\frac{dA}{dt} = \frac{1}{2}r^2\frac{d\theta}{dt}$

so we will have

$\frac{dA}{dt} = \frac{1}{2}r^2\omega$

$\frac{dA}{dt} = \frac{L}{2m}$

since angular momentum and mass is constant here so

all planets sweeps out equal areas in equal times.

4 0

3 years ago

Does anyone know? Please help! Thank you!

Vedmedyk [2.9K]

B density will increase

7 0

3 years ago

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You throw a ball into a box and close the lid. You hear the ball bouncing around inside as the ball’s energy changes from gravit

beks73 [17]

Answer:

Thermal energy.

Explanation:

We know that energy is conserved and it only transform one form to another form ,Like potential energy transform in to kinetic energy when a ball fall down from a height and obtain some velocity.

In this case energy changes from gravitational energy to kinetic energy then elastic energy and after some time this energy will convert in to thermal energy.

So the answer is thermal energy.

5 0

3 years ago

A wheel of radius 30 cm is rotating at a rate of 2.0 revolutions every 0.080 s. (A) through what angle, in radians, does the whe

ioda

You said 2 revolutions every 0.08 seconds

1 revolution = 2pi radians.

A). The 'unit rate' is (2 rev) x (2pi / 0.08 sec) = 50pi radians/sec. =

   157.1 radians per sec (rounded)

B). Radius of the wheel = 30 cm
   Circumference = 2pi R = 60pi cm = 188.5 cm (rounded)

   Rotation speed = 2 revs per 0.08 sec
   Linear speed = 2 x 60pi cm per 0.08 sec

   (120pi cm) / (0.08 sec) = 47.12 meters per sec

C). Frequency = (revs) per second

      = (2) / (0.08 sec) = 25 per second .

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3 years ago

The flu is an infection caused by a pathogen. When a pathogen enters the body, which blood component helps us to attack the path

Arada [10]

Answer:

white blood cells

Explanation:

right on 2020 edge

and in general

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2 years ago

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