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A horizontal force of magnitude F = 149 N is used to push a box of mass m = 5 kg from rest a distance d = 13 m up a frictionless incline with a slope q = 22°.
a) How much work is done by the force on the box?
b) How much work is done on the box by the gravitational force during this same displacement?
c) How much work is done by the normal force of the slope on the box during this displacement?
d) How fast is the box moving after this displacement?
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An inductor has an inductance of 0.082 H. The voltage across this inductor is 45 V, What is the current in the inductor
A skier starts from rest at the top of a hill that is inclined at 12.0° with the horizontal. The hillside is 180.0 m long, and the coefficient of friction between the snow and the skis is 0.0750. At the bottom of the hill, the snow is level and the c..
Two point charges of equal magnitude are 7.3cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of 40N/C . Find the magnitude of the charges.
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Consider the reaction 4He + 40Ca -> 3H + 21Sc Find the minimum laboratory kinetic energy for the 4He projectile if 40Ca is stationary
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