A point source emits 869 w of sound isotropically a small
A point source emits 86.9 W of sound isotropically. A small microphone intercepts the sound in an area of 0.231 cm2, 270 m from the source. Calculate
(a) the sound intensity there and
(b) the power intercepted by the microphone.
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A large reflecting telescope has an objective mirror with a 10.0 m radius of curvature. what angular magnification does it produce
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An object of mass 2 kg and charge 40 microC is moving with initial speed of 5 m/s towards a fixed point charge of 30 microC which is fixed. Find the position of the object when it comes to rest
A point source emits 86.9 W of sound isotropically. A small microphone intercepts the sound in an area of 0.231 cm2, calculate the power intercepted by the microphone
LBJ Company recorded the following events involving a recent purchase of merchandise
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The electric field between the plates of a parallel plate capacitor is horizontal, uniform, and has a magnitude of 3.5*10^4 N/C. What is the angle made by the thread with the vertical axis
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