Find the kinetic energy (in terms of Planck's constant) of a baseball (m = 1 kg) confined to a one-dimensional box that is 25 cm wide if the baseball can be treated as a wave in the ground state
a. 3 h2
b. 2 h2
c. h2
d. 4h2
e. 0.5 h2
B
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If the orbital velocity of the Moon is 1.0 km/s, what is the orbital velocity of a satellite that is 1/16th as far from Earth as the Moon? Hints: There is a long way and a short way to do this calculation. ; G = 6.67 10^-11 m3/s2/kg
a. 1/16 km/s b. 1/8 km/s c. 4 km/s d. 8 km/s e. 16 km/s
What is the approximate latitude of the observer in the diagram below if they are located in the hemisphere containing the south celestial pole?
?
a.
20° N
b.
20° S
c.
70° N
d.
70° S
e.
0°
As the frequency of light increases, its energy ________.
A. moves more slowly B. decreases C. moves more quickly D. increases E. remains constant
Water flowing through a pipe suddenly comes to a section of pipe where the pipe diameter decreases to 86% of its previous value. If the speed of the water in the larger section of the pipe was 36 m/s, what is its speed in this smaller section?
A) 49 m/s B) 42 m/s C) 31 m/s D) 27 m/s