A Young's double-slit experiment is performed and then repeated after moving the screen to triple the previous distance from the slit. What happens to the angular separation (as measured from the slits) of the 4th order maxima?
A. there is no change
B. it becomes one-third the original value
C. it becomes four times the original value
D. it triples
E. it increases by a factor of 2.25
A. there is no change
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Why does the temperature of the corona rise with latitude? a. Atoms undergo fission when repelled by the corona
b. Atoms become neutralized as they dissipate in higher altitudes. c. Atoms within the corona become more ionized at higher altitudes. d. Atoms are forced upward from the chromosphere to the corona. e. Atoms are less excited as they move from the photosphere to the corona.
From what cosmic epoch do the photons in the cosmic background radiation originate?
A) the end of the era of nuclei B) during the era of nucleosynthesis C) during the era of galaxy formation D) the end of the Planck era E) the moment of the Big Bang
A human, running up stairs, can briefly use power of approximately
A. 0.01 horsepower B. 0.1 horsepower C. 0.2 horsepower D. 1 horsepower
Why does something weigh less on the Moon than on Earth?
A. The Moon has no atmosphere to apply a downward force on surface objects. B. Earth's gravity pulls in the opposite direction as the Moon's, so the net force is reduced. C. The farther something is from Earth, the lower its weight. D. The Moon's lower mass creates a lower force of gravity at its surface. E. The object's weight is the same on the Moon as it is on Earth.