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A 2400 kg car moving at an initial speed of 20 m/s along a horizontal road skids to a stop in 66 m. (Note: When stopping without skidding and using conventional brakes, 100 percent of the kinetic energy is dissipated by friction within the brakes. By regenerative braking, such as that used in hybrid vehicles, only 70 percent of the kinetic energy is dissipated.)
1. Discover the energy dissipated by friction.
2. Discover the coefficient of kinetic friction between the tires and the road.
Does the equation of motion V^2-U^2=2as come from the equation Vf^2=Vi^2-2gΔy ? if so where is the minus that isleft once you move Vi^2 to the right?
Two heat reservoirs at temperatures 165°C and 60°C, respectively, are brought into thermal contact, find the change in the entropy of the two-reservoir system
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A puck with mass m = 0.18 kg slides along a frictionless horizontal surface at v = 6.3 m/s . It hits and sticks to the free end of a spring with k = 18 N/m, Find the period of the subsequent simple harmonic motion
A certain nuclear power plant has an electrical power output of 430 MW. The rate at which energy must be supplied to the plant is 1,510 MW. What is the thermal efficiency of the power plant
A barge with a mass 1.50 X 10^5 kg is proceeding down river at6.2 m/s in heavy fog when it collides broadside with a bargeheading directly across the river. What are the speed and direction of motion of the first barge
A flat piece of glass covers the top of a vertical cylinder that is completely filled with water. If a ray of light traveling in the glass is incident on the interface with the water at an angle of 0a= 36.0 degrees , the ray refracted into the wat..
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