When an object is not in motion, it can still have a form of energy. What form of energy does an object have due to its distance
2 answers:
Answer:
c. gravitational potential energy
Explanation:
Gravitational potential energy is the form of energy possessed by an object which is located at a certain height above the ground. This energy is given by:
where:
m is the mass of the object
g is the gravitational acceleration (g=9.8 m/s^2)
h is the height of the object with respect to the ground
We have to note that gravitational potential energy is always measured with respect to a reference altitude (generally, the ground), because the value of h depends on the point chosen as reference.
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The orbital radius is:
Explanation:
The problem is asking to find the radius of the orbit of a satellite around a planet, given the orbital speed of the satellite.
For a satellite in orbit around a planet, the gravitational force provides the required centripetal force to keep it in circular motion, therefore we can write:
where
G is the gravitational constant
M is the mass of the planet
m is the mass of the satellite
r is the radius of the orbit
v is the speed of the satellite
Re-arranging the equation, we find:
Learn more about circular motion:
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