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3 years ago

How work done against gravity can be expressed?

2 answers:

5 0

The work done against the gravitational force goes into an important form of stored energy that we will explore in this section. ... If the object is lifted straight up at constant speed, then the force needed to lift it is equal to its weight mg. The work done on the mass is then W = Fd = mgh.

Ghella [55]3 years ago

4 0

If the object is lifted straight up at constant speed, then the force needed to lift it is equal to its weight mg. The work done on the mass is then W = Fd = mgh. We define this to be the gravitational potential energy (PEg) put into (or gained by) the object-Earth system.

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3 years ago

Why is Jupiter so much larger than Earth? Check all that apply

Liono4ka [1.6K]

Answer:

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Explanation:

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3 years ago

Read 2 more answers

Please help this is physics!!!

larisa [96]

I’m pretty sure u have it right

8 0

3 years ago

What is 6.39 times 10 to the 23rd power

Sveta_85 [38]

Answer:

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3 years ago

Two cellists, one seated directly behind the other in an orchestra, play the same 220-Hz note for the conductor who is directly

Llana [10]

Answer:

d= 1.56 m

Explanation:

In order to have a constructive interference, the path difference between the sources of the sound, must be equal to an even multiple of the semi-wavelength, as follows:

⇒ d = d₂ - d₁ = 2n*(λ/2)

The minimum possible value for this distance, is when n=1, as it can be seen here:

dmin = λ

In any wave, there exists a fixed relationship between the wave speed, the frequency and the wavelength:

v = λ*f

If v = vsound = 343 m/s, and f = 220 1/s, we can solve for λ:

λ = $\frac{v}{f} = \frac{343 m/s}{220(1/s)} = 1.56 m$

⇒ dmin =λ = 1.56 m

3 0

3 years ago

How work done against gravity can be expressed?​

How work done against gravity can be expressed?