A trumpeter plays music on top of a tower. The sound intensity detected at 10 m from the trumpeter is 9.10^-8 W/m^2. Calculate the level of sound intensity (in decibels) that reaches the viewer located 25 m from the trumpeter (suppose that the sound propagates equally in all directions).
Answers: 1
Physics, 22.06.2019 01:00, anna4060
First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit
Answers: 2
Physics, 22.06.2019 23:00, jakalenn2018
A6.0-μf air-filled capacitor is connected across a 100-v voltage source. after the source fully charges the capacitor, the capacitor is immersed in transformer oil (of dielectric constant 4.5). how much additional charge flows from the voltage source, which remained connected during the process?
Answers: 1
Physics, 23.06.2019 05:20, leahstubbs
Derive the formula 2as=v² -u² where the formula have have usual meanings
Answers: 1
A trumpeter plays music on top of a tower. The sound intensity detected at 10 m from the trumpeter i...
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