A 4.05 kg box sits at rest at the bottom of a ramp that is 8.15 m long and that is inclined at 40.0 degree above the horizontal. The coefficient of kinetic friction is 0.40, and the coefficient of static friction is 0.50.What constant force F , applied parallel to the surface of the ramp, is required to push the box to the top of the ramp in a time of 4.26 s ?

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photocells convert light energy to electricity

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right