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String 1 in the figure has linear density 2.90 and string 2 has linear density 3.20 . A student sends pulses in both directions by quickly pulling up on the knot, then releasing it. Consider the pulses are to reach the ends of the strings simultaneously. what are length 1 and 2?
A 36.0 kg child swings in a swing supported by two chains, each 2.90 m long, find the child's speed at the lowest point
A rotating wheel requires 3.08-s to rotate through 37.0 revolutions. What is the constant angular acceleration of the wheel
The three principal visible spectral lines from hydrogen have wavelengths 434 nm, 486 nm, and 656 nm. Find the angular position of the third spectral line in hydrogen
Calculate the angular momentum of Jupiter due to its orbital motion about the Sun. In your calculation, use 7.780 1011 m as the average Jupiter-Sun distance and 3.740 108 s as the period of Jupiter in its orbit
A 0.2-kg steel ball is dropped straight down onto a hard, Determine the magnitude of the impulse delivered to the floor by the steel ball
You are driving down a straight road at speed of 90 km/h and see another car approaching you at speed of 110 km/h along the road, how fast is the other car approaching you
At a rock concert, the engineer decides that the music isn't loud enough. He turns up the amplifiers so that the amplitude of the sound, By what percentage does the intensity increase
A point charge +2.40 is held stationary at the origin. A second point charge -4.30 moves from the point = 0.125 , = 0 , to the point = 0.240 , = 0.240.
A 12.25 mH coil carries a constant current of 0.35 A, clockwise. what potential difference will appear across the coil during this time
A Wm = 890-N man sits on top of a stepladder of negligible mass that rests on a frictionless floor as shown in the figure below. Calculate the tension in the cross brace
A commuter backs her car out of her garage with a constant acceleration of 1.60 m/s2. If she then brakes to a stop in 0.8 s, what is her (constant) deceleration
q1. a small car of mass 831 kg is parked at the back a small truck of mass 1553 kg on a level road. the brakes of both
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