Calculate the change in the box kinetic energy
An 69.0 N box of clothes is pulled 8.9 m up a 30.0° ramp by a force of 100 N that points along the ramp. If the coefficient of kinetic friction between the box and the ramp is 0.22, calculate the change in the box's kinetic energy.
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Determine, according to quantum mechanics, (a) the total energy (in eV) of the atom, (b) the magnitude of the maximum angular momentum the electron can have in this state.
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