Laser light from Earth is received for an experiment by an Earth satellite. Is the light redshifted or blueshifted? What happens to the light if it is refl ected back to Earth?
Explain why true weightlessness occurs only at the center of mass of the space station as it rotates around Earth.
Why does a drop of water become bulged in the space station due to Earth’s gravitational fi eld? Draw the water drop showing the direction to Earth’s center.
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