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A long string is moved up and down with simple harmonic motion with a frequencyof 42 Hz. The string is 543 m long and has a total mass is 47.2 kg. The string is fixed atboth ends. If the string is fixed at a length of 28 m we find a third harmonic standingwave.
a)What is the tension in the string?
b) How long would the string need to be to find the second harmonic standing wave?
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A luminous object 3.0 mm high is placed 200 mm from a convex mirror of radius of curvature 200 mm. Show that the (negative) image distance can be computed using a focal length of -100mm. Compute the image size?
question 1. how much mass would have to be suspended from the vertical spring to stretch it the first 5.0 cm?question
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