Thin Films: When a beam of light, originally traveling in air, enters a piece of glass having an index of refraction of 3/2, its speed
A. increases by a factor of 3/2.
B. is reduced to 2/3 its original value.
C. is unaffected.
Answer: B
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A 3 kg block, initially moving due east at 6 m/s, is acted upon by an impulse having magnitude 6 Ns and direction due west. The final velocity of the block is
A. 4 m/s east. B. 4 m/s west. C. 8 m/s west. D. 8 m/s east.
When the intensity of the light is increased in a photoelectric effect experiment, the energy of the emitted electrons
a. increases b. decreases c. stays the same d. becomes more quantized e. becomes less quantized
A surface of erosion between rocks that represents a gap in Earth history is
A) called a dike. B) an unconformity. C) a faunal conformity. D) none of the above
Coil 1, connected to a 100-? resistor, sits inside coil 2 . Coil 1 is connected to a source of 60 cycle per second AC current. Which statement about coil 2 is correct?
a. No current will be induced in coil 2. b. DC current (current flow in only one direction) will be induced in coil 2. c. AC current (current flow in alternating directions) will be induced in coil 2. d. DC current will be induced in coil 2, but its direction will depend on the initial direction of flow of current in coil 1. e. Both AC and DC current will be induced in coil 2.