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3 years ago

Give two examples of gravity in the solar system

Physics

1 answer:

Nikolay [14]3 years ago

6 0

The planets revolving around the sun, The moon revolving around the Earth.

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How does work affect energy between objects so it can cause a change in the form of energy? Work transfers energy. Work changes

IceJOKER [234]

'Doing work' is a way of transferring energy from one object to another, energy is transferred when a force moves through a distance.

If i explain with formula

Work done (J) = Energy transferred (J)

So more energy, more work done bc u transferred more energy to move the object and doing the work. and if you only use a little of energy, the work done also only a little.

4 0

3 years ago

A skier pushes off the top of a hill with an initial speed of 3.30 m/s. How fast will she be moving after dropping 5.00 meters i

Gala2k [10]

Answer:

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3 years ago

A student throws a baseball at a large gong 52 m away and hears the sound of the gong 1.73333 s later. The speed of sound in air

Arte-miy333 [17]

Speed = 52/1.57576= 33 m/s

Explanation:

Distance = speed * time

Given , the distance traveled by the baseball = 52 m

Speed of sound in air = 330 m/s

Total time = 1.73333 s .

Total time for the student to hear the sound of the gong is the sum of the time take for the baseball to reach the gong and the time taken by the sound to travel back.

Distance traveled by the sound is 52 m and the speed is 330 m/s

So time taken by the sound to travel back = distance traveled / the speed

=> time = 52/330 s = 0.15757 s

Time taken by the base ball to reach the gong is the total time - the time taken by the sound

=> time taken by base ball = 1.73333 - 0.15757 = 1.57576s

Speed of the base ball to reach the gong = distance / time

Speed = 52/1.57576= 33 m/s

3 0

3 years ago

Kepler improved the Copernican model of the universe by adding : string theory

Mashutka [201]

Answer:

elliptical orbits

Explanation:

the earth revolves round the sun in an elliptical form

6 0

3 years ago

Two objects exert a gravitational force on 8N on one another what would that force be if the mass of both objects were doubled?

jolli1 [7]

Gravitational force of attraction between two objects can be calculated from the following formula:
$F = \frac{m_1 \cdot m_2}{r^{2}}$
Where m with subscript stands for mass of the object and r is the distance between them.
When we double the mass of those two objects, distance between them stays the same, while in the numerator we have:
$2\cdot m_1 \cdot 2 \cdot m_2 = 4\cdot m_1 \cdot m_2$
When numerator in the second case 4 times greater than the 'original' numerator and denominator stays the same, force becomes 4 times greater.

3 0

3 years ago