Aconcert loudspeaker suspended high off the ground emits 34 w of sound power. a small microphone with a 1.0 cm2 area is 44 m from the speaker. part a -what is the sound intensity at the position of the microphone? express your answer in mw/m2and using two significant figures. i = /m2part b -what is the sound intensity level at the position of the microphone? express your answer in db using two significant figures.β=
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The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?
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Aloop of wire is in a magnetic field such that its axis is parallel with the field direction. which of the following would result in an induced emf in the loop? choose all that apply. a loop of wire is in a magnetic field such that its axis is parallel with the field direction. which of the following would result in an induced emf in the loop? choose all that apply. moving the loop outside of the magnetic field region. spin the loop such that its axis does not consistently line up with the magnetic field direction. change the magnitude of the magnetic field. change the diameter of the loop
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Aconcert loudspeaker suspended high off the ground emits 34 w of sound power. a small microphone wit...
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