As viewed from underwater, at what angle from the vertical does the Sun appear to set?
A)
0°
B)
90°
C)
49°
D)
41°
E)
45°
C
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An increase in the length of side branches on polyethylene LCMs results in a(n) _____________in the hardness of polyethylene.
Fill in the blank(s) with the appropriate word(s).
A piece of taffy slams into and sticks to an identical piece of taffy at rest. The momentum of the combined pieces after the collision is the same as before the collision, but this is not true of the kinetic energy, which partly degrades into heat
What percentage of the kinetic energy becomes heat? A) 0% B) 25% C) 50% D) 75% E) need more information
What is the power of the lens that has a focal length of 40 cm?
A) -2.5 diopters B) -4.0 diopters C) +4.0 diopters D) +2.5 diopters E) +2.7 diopters
For the ground state of the hydrogen atom, which of the following numbers represents the correct value of the magnetic quantum number?
A) 1 B) 2 C) 0 D) -1 E) -2