The self-inductance of a solenoid increases under which of the following conditions?
a. Only the solenoid length is increased.
b. Only the cross sectional area is decreased.
c. Only the number of coils per unit length is decreased.
d. Only the number of coils is increased.
d
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In a closed universe a beam of light will:
A) come back to where it originated. B) continue on forever. C) move on a circular path around its origin. D) reflect off the edge of the universe and come back. E) go on some strange path, never to return.
Within the frost line, planetesimals were composed entirely of rock, and outside the frost line, planetesimals were composed entirely of ice
Indicate whether the statement is true or false
The lowest A on a piano has a frequency of 27.5 Hz. If the tension in the 2.00-m string is 308 N, and one-half wavelength occupies the string, what is the mass of the wire?
a. 0.025 kg b. 0.049 kg c. 0.051 kg d. 0.081 kg e. 0.037 kg
For the circuit shown, what is the rate of change of the current in the inductor when the current in the battery is 0.50 A?
a.
600 A/s
b.
400 A/s
c.
200 A/s
d.
800 A/s
e.
500 A/s