The maximum east or west longitude possible is also called the
a. meridian.
b. longitude.
c. International Date Line.
d. equator.
c
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Two satellites with equal rest masses are traveling toward each other in deep space. One is traveling at 0.550c and the other at 0.750c. The satellites collide and somehow manage to stick together
What is the speed of the combined object after the collision? A) 0.100c B) 0.113c C) 0.150c D) 0.175c E) 0.311c
The ratio of the speed of light in a vacuum to the speed of light in a medium is known as the index of
a. reflection. b. refraction. c. diffraction. d. none of these.
What is the origin of Martian meteorites?
A) they are rocks brought to Earth by Martians B) they are rocks brought back to Earth by sample return missions C) they are rocks blasted from the surface of Mars by volcanoes; these rocks then floated around in interplanetary space before falling to Earth D) they are rocks blasted from the surface of Mars by impacts; these rocks then floated around in interplanetary space before falling to Earth
A refrigerator uses mechanical work to transfer heat from a colder region to a hotter one, as shown in this schematic. Why is it not possible to remove heat from the cold region and transfer it to the hot region without the input of work by an external source?
a. It would violate the first law of thermodynamics. b. It would violate the second law of thermodynamics. c. Both a. and b. d. It would be possible only if the machine did not lose some energy as heat because of friction.