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A 460 kg piano is being lowered into position by a crane while two people steady it with ropes pulling to the sides. Bob's rope pulls to the left, 15 degrees below horizontal, with 510 N of tension. Ellen's rope pulls toward the right, 27 degrees below horizontal.
a) What tension must Ellen maintain in her rope to keep the piano descending at a steady speed?
b) What is the tension in the main cable supporting the piano?
You have a string with a mass of 14.1 g. You stretch the string with a force of 8.63 N, giving it a length of 1.93 m. What is the wavelength of the standing wave you create in the string
The distance between two telephone poles is 55.55 m. When a 1.00 kg bird lands on the telephone wire midway between the poles, the wire sags 0.165 m. illustrate a free-body diagram of the bird.
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A child on a freely rotating merry-go-round moves from near the center to the edge. Will the rotational velocity of the merry-go-round increase, decrease, or not change at all? Explain.
Suppose you hear a clap of 4.63 seconds after seeing the lightning stroke. how far are you from the lightning stroke
calculate the fraction of which is submerged when the cylinder floats in alcohol. Fraction of Vwood submerged.
question1the ink drops have a mass 1.00times10-11 each and leave nozzle and travel horizontally toward the paper at
A model airplane with mass 0.743 kg is tethered to the ground by a wire so that it flies in a horizontal circle 29.7 m in radius. The airplane engine provides a net thrust of 0.810 N perpendicular to the tethering wire.
What is the magnitude
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 66.3° above the horizontal. By how much does the rocket clear the top of the wall
You are setting up two standing string waves. You have a length of uniform piano wire that is 3.0 m long and has a mass of 150 g. You cut this into two lengths, What should be the ratio of tensions
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