If two electrons are entangled, then
A) if one particle suddenly alters its wave packet, the other must also.
B) both are part of a single matter wave.
C) Both of the above.
D) they must exert forces on each other.
E) All of the above.
C
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What type of spectrum is emitted by a heated solid object (such as the filament of an incandescent bulb)?
A. continuous B. absorption-line C. emission-line D. None of these choices are correct.
The sidereal period of the Moon is
a. about 27.32 days long. b. the period of time for the Moon to orbit Earth once with respect to the stars. c. the period of time between successive eclipses at a given location on Earth. d. the period of time from when the Moon rises until the Moon rises again the next night. e. about 27.32 days long and the period of time for the Moon to orbit Earth once with respect to the stars.
Which of the following statements about Mars is not true?
A) We have landed spacecraft on its surface. B) It is considered part of our inner solar system. C) We could survive on Mars without spacesuits, as long as we brought oxygen in scuba tanks. D) It has some liquid water today, but used to have large amounts of flowing water.
Suppose there is an object for which F = +kx. What will happen if the object is moved away from equilibrium (x = 0) and released?
a. It will return to the equilibrium position. b. It will move further away with constant velocity. c. It will move further away with constant acceleration. d. It will move further away with increasing acceleration.