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Engineering Physics

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A force of 10 N is applied at the end of a lever arm that is 0.5 meters long. The force is applied at an angle of 30° to the lever arm. What is the magnitude of the torque produced by this force?

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A motor lifts a 950-kg load vertically by 50.0 m in 75 seconds. What is the average power output of the motor during this process?

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A baseball player with mass 93 kg, sliding into second base, is retarded by a

frictional force of magnitude 450 N.

What

is the coefficient of kinetic friction

μk

between the player

and the ground?

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What is the capacitance of a capacitor if it stores 3 coulombs of charge when a potential difference of 6 volts is applied across its plates?

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A refrigerator of mass 31.1 kg is initially at rest. Using a net force of magnitude 1.5 N, a person pushes the refrigerator for

6.9 s. Which of the following is the speed(in m/s) of

the refrigerator after the 6.9 s interval?

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A wire carries a charge of 300 C

through its cross-section every 2 min.

What is the current in the wire?

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Calculate the kinetic energy(in joules) of a 109 g baseball thrown at a velocity of 10 m/s.

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A scalar is a quantity that is fully described by:

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