In which part of the ear is the cochlea?
a. outer ear
b. middle ear
c. inner ear
d. ear canal
[Ques. 2] By what factor does the maximum energy stored in a series RL circuit change if the resistance is doubled and the inductance is tripled in the circuit?
a. 0.67 b. 0.75
c. 0.50 d. 1.5
[Ques. 3] Of the frequencies listed below, to which one is the human ear most sensitive?
a. 33 Hz
b. 330 Hz
c. 3 300 Hz
d. 33 000 Hz
[Ques. 4] A circuit consists of a 9.3-mH coil, a 16.0-V battery, a parallel combination of a 19- resistor and a 6.0- resistor, and a switch, all in series. What is the time constant of this circuit?
a. 3.7E4 s
b. 2.0E3 s
c. 4.9E4 s
d. 3.3E2 s
e. This circuit has 2 time constants.
[Ques. 5] The term timbre refers to which of the following?
a. Any musical instrument made primarily of wood.
b. The quality of sound from instruments due to the mixture of harmonics.
c. Instruments that have valves.
d. An instrument made in France.
[Ques. 6] An emf of 0.52 V is induced in a 0.71-H inductor. What is the rate of change of current through the inductor?
a. 0.73 A/s
b. 1.4 A/s
c. 0.37 A/s
d. 1.23 A/s
e. 0.71 A/s
[Ques. 7] The number of overtones, and their relative intensities, is associated with what property of the tone generated by a musical instrument?
a. quality
b. interference pattern
c. range
d. attack pattern
[Ques. 8] A circuit consists of a 11.4-mH coil, a 19- resistor, a 5.0- resistor, a 10-V battery and a switch, all in series. What is the time constant of this circuit?
a. 2.1E3 s
b. 4.8E3 s
c. 2.9E3 s
d. 4.8E4 s
e. 4.2E1 s
[Ques. 9] Two tuning forks sounding together result in a beat frequency of 4.00 Hz. If the frequency of one of the forks is 258 Hz, what is the frequency of the other?
a. 266 Hz or 250 Hz
b. 129 Hz
c. 254 Hz or 262 Hz
d. 64.5 Hz
e. 131 Hz
[Ques. 10] A series circuit contains a 12-V battery, a 3.3- resistor, and a 4.4-mH inductor. If the switch to the battery is closed at t = 0, find the time required for the current in the circuit to reach 63 of its final value.
a. 1.3E3 s
b. 1.5E2 s
c. 7.5E+2 s
d. 1.6E2 s
e. 1.1E4 s
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