The position of a mass that is oscillating on a spring is given by x = (18.3 cm) cos[(2.35s-1)t]. What is the frequency of this motion?
A)
0.426 Hz
B)
1.34 Hz
C)
2.67 Hz
D)
0.128 Hz
E)
0.374 Hz
E
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Fill in the blank(s) with correct word
The small circles in the diagram below represent the positions along the x axis of a body at equal time intervals. Assume the body moves in a straight line.
This diagram is most likely to describe
A. a swimmer swimming laps. B. an exercise on a rowing machine. C. a person on a treadmill. D. a tennis ball during a volley. E. a runner who tripped, fell, rose, and continued racing.
Atoms with the same atomic number but with different numbers of neutrons are referred to as
A) positrons. B) nucleons. C) nuclides. D) isotopes. E) none of the given answers
One ampere × one second is a unit of
a. power. b. current. c. voltage. d. electric charge. e. resistance.