A 100-V DC signal is applied to a series circuit composed of four equal resistors 10 ? each. What is the voltage across each resistor?
A) 10 V
B) 15 V
C) 20 V
D) 25 V
E) 50 V
D
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The velocity of a longitudinal wave traveling down a solid rod depends on both the elastic modulus of the material and its density
Indicate whether the statement is true or false
A lens with a focal length of 12 cm has what refractive power?
a. 5.0 diopters c. 6.7 diopters b. 9.6 diopters d. 8.3 diopters
The position of a particle moving along the y axis has a position given by
?
?
Is there any time interval during which the particle is not moving?
A. Yes, from 0.60 s to 1.00 s. B. Yes, from 0.795 s to 0.805 s. C. Yes, at the time t = 0.80 s. D. No, the velocity is never zero. E. No, an instant is not the same as a time interval.
In comparing two waves of the same type and same amplitude, the one with the longer wavelength would have
A) lower frequency. B) both higher energy and higher frequency. C) higher energy. D) both higher energy and lower frequency. E) higher frequency.