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In a classroom demonstration, a speaker was mounted on the end of a 50.0 cm long arm and rotated in a horizontal circle at a constant angular speed of 75.0 rpm. The speaker emitted sound at a constant frequency of 441 Hz. The speed of sound was 343 m/s.
A. Calculate the range of sound frequencies heard by the students in the classroom.
B. If the sound intensity levels at a distance of 6.59 m from the speaker is 99.0 dB, calculate the rate at who h the speaker is producing sound energy.
A particular guitar string is supposed to vibrate at 203 Hz, other than it is measured to actually vibrate at 208 Hz. By what percentage must the tension in the string be changed to get the frequency to the correct value.
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q1. assume that when you ride on your 7.60-kg bike the weight of you and the bike is supported equally by the two
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A laser with wavelength d/8 is shining light on a double slit with slit separation 0.3 {rm mm}. This results in an interference pattern on the screen a distance L away from the slits. We wish to shine a second laser, with a different wavelength, t..
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define the initial velocity of the ball.
The electric motor of a model train accelerates the train from rest to 0.580 m/s in 33.0 ms. the total mass of the train is 563 g. Find out the average power delivered to the train during its acceleration. The units need to W for the final answer.
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