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A block whose weight is W= 250 nt is on a frictionless plane which is at angle q= 25 degrees. A cable between the ceiling and the block makes an angle q=55 degrees from the ceiling. See diagram with given parameters, angles, physics statements, and a polygon created from known information. Also an illustration of the Law of Sines and Law of Cosines.
Find the force C in the cable, and the normal force N on the block by the plane.
Two people hear a tornado siren, but one listener is 22.5 times farther away from the source of the sound than the other. What is the intensity level (in dB) at the farther listener relative to the other listener
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The amplitude of a system moving with simple harmonic motion is doubled. The total energy will the be:
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A child of mass 60.0 kilogram is rescued from a hotel fire by leaping into a firefighters' net. Find the average force on the net due to the child during the interval
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