daniel9299

02.03.2021 • 

Physics

A meteorite with a mass of 25 kilograms falls to Earth in a direction perpendicular to the Earthís surface. At t = 0 seconds the meteorite is 1000 meters above the Earth. At
t = 2 seconds it is 750 meters above the Earth. Assume the meteoriteís acceleration
due to gravity is constant during this time. Which of the following is the amount of
work the Earthís gravitational force has done on the meteorite between t O and t =
2?
245,600 )
61,250 )
183,750)
- 6,250 )

Ответ:

mikemurray115

02.03.2021

Physics

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Explanation: hi breme

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Ответ:

SavgeKid7578

06.01.2022

Physics

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1)TRUE2)TRUE3)TRUE4)5)v = 100 m/s

Explanation:

1)

As we know by the formula of speed of sound we have

So approx speed of the sound is nearly 340 m/s

so its TRUE

2)

Wave speed is given as

so it is given as

TRUE

3)

so from above equation we have

4)

Wavelength is given as

5)

As we know that

so we will have

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