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3 years ago

Find an expression for the square of the orbital period.

Physics

1 answer:

jenyasd209 [6]3 years ago

8 0

Answer:

T²= 4π²R³/GM

Explanation:

First we know that

Fg= Fc

Because centripetal force must equal gravitational force

GMm/R² = Mv²/R

But velocity is 2πR/T

So by substitution we have

GMm/R²= M (2πR/T)/T

We have

T²= 4π²R³/GM as period

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3 years ago

Radar is used to determine distances to various objects by measuring the round-trip time for an echo from the object. (a) How fa

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Answer:

150000000000 m

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Speed of electromagnetic waves through vacuum = $3\times 10^8\ m/s$

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The accuracy by which I will be able to measure the echo time is 33.33 ns

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