Physics, 22.08.2019 16:10 shamayajohnsonsh5
Aconcert loudspeaker suspended high off the ground emits 25.0 w of sound power. a small microphone with a 0.500 cm^2 area is 55.0 m from the speaker. a. what is the sound intensity at the position of the microphone? express your answer with the appropriate units.
b. how much sound energy impinges on the microphone each second? express your answer with the appropriate units.
Answers: 3
Physics, 22.06.2019 07:00
The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?
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Physics, 22.06.2019 16:50
Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.
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Physics, 23.06.2019 03:00
Current vs. forcewhat type of relationship does this graph show?
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Aconcert loudspeaker suspended high off the ground emits 25.0 w of sound power. a small microphone w...
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