What is stellar parallax?
A) It is the daily rise and set of the stars.
B) It describes the fact that stars are actually moving relative to one another, even though to our eyes the stars appear fixed in the constellations.
C) It is the slight back-and-forth shifting of star positions that occurs as we view the stars from different positions in Earth's orbit of the Sun.
D) It is the change in the set of constellations that we see at different times of year in the evening sky.
C
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A solid glass ball weighs 1 N. One with twice the diameter weighs
A) 1 N. B) 2 N. C) 3 N. D) 4 N. E) more than 4 N.
The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water. The amount of heat required to boil 1 kg of water is __________ times the amount of heat required to melt 1 kg of ice
Fill in the blank(s) with correct word
How many unique quantum states correspond to the lowest possible energy level of an electron in the hydrogen atom?
A) 3 B) 0 C) 1 D) 4 E) 2
An athlete competing in the long jump leaves the ground with a speed of 9.14 m/s at an angle of 35° above the horizontal. How long does the athlete stay in the air, assuming no significant air resistance?
A) 0.88 s B) 1.1 s C) 0.54 s D) 0.50 s E) 2.5 s