Question

A 3420-kg spacecraft is in a circular orbit 1690 km above the surface of Mars

How much work must the spacecraft engines perform to move the spacecraft to a circular orbit that is 3860 km above the surface?

Answer #1

A 3450-kg spacecraft is in a circular orbit 1630 km above the
surface of Mars. How much work must the spacecraft engines perform
to move the spacecraft to a circular orbit that is 3560 km above
the surface?

A 2640-kg spacecraft is in a circular orbit 2100 km above the
surface of Mars.
How much work must the spacecraft engines perform to move the
spacecraft to a circular orbit that is 3830 kmkm above the
surface?
Express your answer to three significant figures.

A 4000 kgkg spacecraft is in a circular orbit 2500 kmkm above
the surface of Mars.
Part A
How much work must the spacecraft engines perform to move the
spacecraft to a circular orbit that is 4500 kmkm above the
surface?
Express your answer with the appropriate units.

A spacecraft of mass 6.00 ? 104 kg is in a circular
orbit at an altitude of 200 km above the Earth's surface. Mission
Control wants to fire the engines so as to put the spacecraft in an
elliptical orbit around the Earth with an apogee of 4.00 ?
104 km. How much energy must be used from the fuel to
achieve this orbit? (Assume that all of the fuel energy goes into
increasing the orbital energy. This model will...

A 3000 kg lunar lander is in orbit 80 km above the surface of
the moon. It needs to move out to a 400 km -high orbit in order to
link up with the mother ship that will take the astronauts
home.
How much work must the thrusters do?

A 2000 kg lunar lander is in orbit 70 km above the surface of
the moon. It needs to move out to a 500 km -high orbit in order to
link up with the mother ship that will take the astronauts
home.
How much work must the thrusters do?

a) For a satellite to be in a circular orbit 850 km above the
surface of the earth, what orbital speed must it be given?
b) What is the period of the orbit (in hours)?

A 160 kg satellite is orbiting on a circular orbit 7655 km above
the Earth's surface. Determine the speed of the satellite. (The
mass of the Earth is 5.97×1024
kg, and the radius of the Earth is 6370 km.)
(in km/s)

A 400 kg satellite is in a circular orbit at an altitude of 525 km
above the Earth's surface. Because of air friction, the satellite
eventually falls to the Earth's surface, where it hits the ground
with a speed of 2.30 km/s. How much energy was transformed into
internal energy by means of air friction?

A 345 kg satellite is orbiting on a circular orbit 8955 km above
the Earth's surface. What is the gravitational acceleration at the
location of the satellite? (The mass of the Earth is
5.97×1024 kg, and the radius of the Earth is 6370
km.)?

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