A 13.7-?F capacitor is connected to an AC source with an rms voltage of 148 V and a frequency of 40.0 Hz. What is the rms current in the capacitor?
a. 0.162 A
b. 0.255 A
c. 0.509 A
d. 0.360 A
e. 0.720 A
c
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What are the two most important intrinsic properties used to classify stars?
A) Mass and age B) Luminosity and surface temperature C) Distance and luminosity D) Distance and surface temperature E) Distance and color
If the accuracy in measuring the position of a particle increases, the accuracy in measuring its velocity will
A) increase. B) decrease. C) remain the same. D) It is impossible to say since the two measurements are independent and do not affect each other.
The intensity level of an orchestra is 85 dB. A single violin achieves a level of 70 dB. How does the intensity of the sound of the full orchestra compare with that of the violin?
Compared to a type A0 star, a type A9 star is
A) bluer. B) more massive. C) cooler. D) hotter. E) more luminous.