How much work is done by friction
A 15.00 kg block starts from rest at the top of a 25.0 m long 30.0° incline. Its kinetic energy at the bottom of the incline is 1837.5 J. How much work is done by friction?
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A car speeds along the curved exit ramp of a freeway. The radius of the curve is 78 m. A 76 kg passenger holds the arm rest of a car door with a 220 N force to keep from sliding across the front seat of the car.
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The steam expands to 15.0 psi a with a specific volume of 27.34 ft^3/Ibm and a final internal energy of 1080.1 Btu/Ibm. Calculate the velocity at the exit of the nozzle.
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