A mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 Hz and an amplitude of 8.0 cm. If a timer is started when its displacement from equilibrium is a maximum (hence x = 8 cm when t = 0), what is the displacement of the mass when t = 3.7 s?
a. zero
b. 0.025 m
c. 0.049 m
d. 0.080 m
B
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At which location will the electric field between the two parallel plates of a charged capacitor be the strongest in magnitude?
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The electrical conductivity of an intrinsic semiconductor is due to the creation of free electrons in the conduction band and _________in the valence band.
Fill in the blank(s) with the appropriate word(s).
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A. 0.40c B. 0.60c C. 0.70c D. 0.80c E. 0.90c
If a heat engine has an efficiency of 28.0% and its power output is 540 W, what is the rate of heat input from the combustion phase?
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