Why does an observer on Earth always see the same side of the Moon's surface?
The Moon rotates on its axis with the same period as it revolves around Earth, so the
same side always faces our planet.
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A radio telescope and an optical telescope of the same size have the same angular resolution
Indicate whether the statement is true or false
Satellite Motion: A satellite orbits the Earth once every 6.0 hours in a circle. What are the magnitude and direction of the acceleration of the satellite? (G = 6.67 × 10-11 N ? m2/kg2, Mearth = 5.97 × 1024 kg)
What will be an ideal response?
A 25-kg piece of equipment can be hung by steel wires of length 1.00 m, 2.00 m, or 3.00 m. If all the wires have the same diameter, which one will stretch the greatest percent?
A) the 3.00-m wire B) the 1.00-m wire C) the 2.00-m wire D) They will all stretch by the same percent.
The speed of a seismic wave depends on
A) the type of material it travels through. B) how far it has to travel. C) its amplitude. D) its frequency.