The double-slit experiment with electrons illustrates the surprising idea that
A) the microscopic behavior of matter is entirely predictable.
B) electrons sometimes behave like waves.
C) light is composed of tiny particles.
D) electrons sometimes behave like tiny particles.
E) light is a wave
B
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If the torque acting on an object about a certain axis is zero, what can we say about the angular momentum of this object with respect to this axis?
1.It is zero. 2.It is constant. 3.It can never be zero. 4.Nothing, angular momentum has nothing to do with torque.
How does the speed (in a vacuum) of a high-frequency electromagnetic wave compare with a low-frequency electromagnetic wave?
A) the lower-frequency wave has the higher speed because speed is inversely related to frequency B) the two waves have the same speed because the speed of light is constant C) the lower-frequency wave has the higher speed because it has the longest wavelength D) the higher-frequency wave has the higher speed
If you lived on the Moon how often would the Earth set below your horizon?
a. Every 24 hours b. Once a sidereal period (27.3 days) c. Once a synodic period (29.5 days) d. Every year e. Never
Assume that a heavy rope is tied to a light rope. Imagine a transverse wave that propagates from the light rope onto the heavy rope. For this wave, which of the following will occur?
(i) The frequency will decrease. (ii) The frequency will increase. (iii) The wave speed will increase. (iv) The wave speed will decrease.
1.(iii) only. 2.(ii) and (iii) only. 3.(i) and (iv). 4.(iv) only.