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.
c
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If two objects are electrically attracted to each other,
A) both objects must be negatively charged. B) both objects must be positively charged. C) one object must be negatively charged and the other object must be positively charged. D) one of the objects could be electrically neutral. E) None of the above statements are absolutely true.
A tiny spring, with a spring constant of 1.30 N/m, will be stretched to what displacement by a 0.00500-N force?
a. 3.85 mm b. 7.69 mm c. 11.5 mm d. 6.50 mm e. 3.25 mm
Captain Jirk reports to headquarters that he left the planet Senesca 1.88 × 10^4 seconds earlier. Headquarters sends back the message: "Was that spaceship proper time?" It will be spaceship proper time if it was
a. measured by one clock fixed at one spot on Senesca. b. measured by one clock fixed at one spot on the spaceship. c. measured by a clock on Senesca at departure and by a clock on the spaceship when reporting. d. measured by a clock on the spaceship when departing and by a clock on Senesca when reporting. e. calculated by dividing the distance from Senesca according to Senesca by the speed of the spaceship.
Except for their color, a perfectly black (absorbing) object is identical to a perfectly white (reflecting) object. If identical light falls on both of these objects, what is true about the momentum they will receive from this light?
A) The white object will receive twice as much as the black object. B) The white object will receive four times as much as the black object. C) The black object will receive four times as much as the white object. D) The black object will receive twice as much as the white object. E) They will both receive the same amount.