You wish to place a spacecraft in a circular orbit around the earth so that its orbital speed will be 4.00×103m/s. what is this orbit's radius?

The radius of orbit=

Explanation:

We are given that

Orbital speed=m/s

We have to find the radius of orbit of spacecraft.

We know that

Gravitational constant=

Mass of earth=

Orbital speed=

Where G= Gravitational constant

M=Mass of earth

r=Radius of orbit

Substitute the values in the formula

Squaring on both sides

Hence, the radius of orbit=

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