Work, Energy, and Power-Princeton AP Physics I

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13 Terms

1
unit of power
the joule per second (J /s), which is renamed the watt, and symbolized W.
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2
Power
the rate at which work gets done (or energy gets transferred, which is the same thing)
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3
crests
maximum vertical displacement above the horizontal
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4
Troughs
maximum vertical displacement below the horizontal
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5
wavelength
the crests and troughs repeat themselves at regular intervals along the rope, and the distance between two adjacent crests (or two adjacent troughs) is the length of one wave
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6
Amplitude of the wave
maximum displacement from the horizontal equilibrium position of the rope is measurable
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7
period
the interval taken to complete one cycle of a regularly repeating phenomenon
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8
frequency
the number of occurrences within a given time period
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9
Superposition of Waves
when two or more waves meet, the displacement at any point of the medium is equal to the algebraic sum of the displacements due to the individual waves
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10
standing wave
a wave in which the ratio of its instantaneous amplitude at one point to that at any other point does not vary with time
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11
compressions
the variations in the conducting medium can be positioned at which the molecules of the medium are bunched together (where the pressure is above normal)
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12
Rarefactions
positions where the pressure is below normal
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13
The Doppler Effect
When a source of sound waves and a detector are not in relative motion, the frequency that the source emits matches the frequency that the detector receives.
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