What inductance is needed in series with a 4.7-?F capacitor so the circuit will oscillate at a frequency of 10 kHz?
A) 21 ?H
B) 54 ?H
C) 4.7 mH
D) 5.4 mH
B
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Simple Harmonic Motion: If your heart is beating at 76.0 beats per minute, what is the frequency of your heart's oscillations in hertz?
A. 4560 Hz B. 1450 Hz C. 3.98 Hz D. 2.54 Hz E. 1.27 Hz
A 100-m long transmission cable is suspended between two towers. If the mass density is 2.01 kg/m and the tension in the cable is 3.00 × 104 N, what is the speed of transverse waves on the cable?
A. 60 m/s B. 122 m/s C. 244 m/s D. 310 m/s E. 1500 m/s
The slope of a position versus time graph gives
A) the distance traveled. B) velocity. C) acceleration. D) displacement.
A heat engine absorbs 2 500 J of heat from a hot reservoir and expels 1 000 J to a cold reservoir. When it is run in reverse, with the same reservoirs, the engine pumps 2 500 J of heat to the hot reservoir, requiring 1 500 J of work to do so. Find the ratio of the work done by the heat engine to the work done by the pump. Is the heat engine reversible?
a. 1.0 (no) b. 1.0 (yes) c. 1.5 (yes) d. 1.5 (no) e. 2.5 (no)