Physics, 05.07.2019 00:10, colton7856
The transverse displacement of a medium is described by the wavefunction y(x, t) asin(wt ka) where t is time and x is the position along the medium. (a) define the terms a, w and k, stating appropriate units (b) state the direction of propagation of the wave (c) the wave is reflected from a boundary give an expression for the reflected wavefunction when the propagation velocity (i) increases at the boundary; (ii) decreases at the boundary c2. a 1.15 khz sound source is accelerated away from a microphone such that its velocity rises linearly from 0 to 66ms1 in 1.1s. the speed of sound in air is 344ms. calculate (a) the lowest frequency detected by the microphone; (b) the time taken for the detected frequency to fall below 1.0 khz. [hint: neglect the time it takes for the sound to travel from the source to the microphone.]
Answers: 2
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You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.
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In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy. work depends on the square of the change in potential energy. work is equal to the negative of the change in kinetic energy. work is equal to the square of the change in kinetic energy
Answers: 2
The transverse displacement of a medium is described by the wavefunction y(x, t) asin(wt ka) where t...
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