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Wewaii [24]
3 years ago
6

What linear speed must an earth satellite have to be in a circular orbit at an altitude of 159 km?

Physics
1 answer:
IgorLugansk [536]3 years ago
8 0
Gravitational acceleration, g = GM/r^2. Additionally, for a satellite in a circular orbit, g = v^2/r

Where, G = Gravitational constant, M = Mass of earth, r = distance from the center of the earth to the satellite, v = linear speed of the satellite.

Equating the two expressions;
v^2/r = GM/r^2
v = Sqrt (GM/r);
But GM = Constant = 398600.5 km^3/sec^2
r = Altitude+Radius of the earth = 159+6371 = 6530 km

Substituting;
v = Sqrt (398600.5/6530) = 7.81 km/sec = 781 m/s
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A 20~\mu F20 μF capacitor has previously charged up to contain a total charge of Q = 100~\mu CQ=100 μC on it. The capacitor is t
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Explanation:

The given data is as follows.

       C = 20 \times 10^{-6} F

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Formula to calculate the time is as follows.

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               0.135 = e^{\frac{-t}{2}}

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4 0
3 years ago
How high up is a 5kg object that has 300j of energy
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-- If the object is moving with speed of 10.954 meters per second, then
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2 years ago
What is the density of a rock that has a mass of 10 grams and the volume of 2ml?
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=10/2
=5g/ml
6 0
3 years ago
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