If satellite A is in a 2:1 resonance with satellite B, this means that:
A) satellite A is twice as large as satellite B.
B) satellite A moves twice as fast as satellite B.
C) satellite A completes one orbit for every two orbits of satellite B.
D) the orbit of satellite B takes twice as long to complete as that of satellite A.
E) satellite B spins on its axis one time for every two orbits of satellite A.
D
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A 200 ft. high by 60 ft. wide building is on fire, and one of its walls is at 1500ºF. Air at 100ºF and 40% relative humidity is near the building as shown in the figure. Estimate the net heat transfer to the air from this burning wall if the wall’s emissivity is 0.85.
_____ is an example of a Terrestrial planet
A) Jupiter B) Saturn C) Earth D) Neptune
In a transverse wave, particles move...?
a) Back and Forth b) Up and Down c) Vertically d) Wherever the matter's going
Imagine a Star Wars type spaceship in orbit around a planet. Its engine suffers a severe malfunction, and explodes. What is the most physically realistic depiction of this event?
A) The spacecraft burns up in a giant ?reball. B) The spacecraft breaks apart, and the pieces continue to orbit the planet. C) The spacecraft breaks in half and begins to sink down into the planet, like a sinking aircraft carrier.