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Assume you cut a small gap in a metal ring. If you heat the ring, find will the gap become wider or narrower?
A gymnast of mass 62.0 hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch.
An initially stationary 2.7 kg object accelerates horizontally and uniformly to a speed of 16 m/s in 3.1 s. What is the instantaneous power due to that force at the end of the interval
A 0.55 T magnetic field is perpendicular to a circularloop of wire with 53 turns and a radius of 14 cm. If the magnetic field is reduced to zero in0.14 s, what is the magnitude of the induced emf?
A 1300 kilogram car has a maximum power output of 130 horsepower. Find how steep a hill can it climb at a constant speed of 94 km/h if the frictional forces add up to 800 Newton
A heavy crate is attached to the wall by a light rope. Another rope hangs off the opposite edge of the box. If you slowly increase the force on the free rope by pulling on it in a horizontal direction, which rope will break? Ignore friction and th..
A puck on a frictionless, horizontal air table is attached to a string that passes down through a hole in the table. what is the new speed of the puck
a a lawn mower has a flat rod-shaped steel blade that rotates about its center. the mass of the blade is 0.508 kg and
although the evidence is weak there has been concern in recent years over possible health effects from the magnetic
A particle is acted on by two torques about the origin: τ1 has magnitude 10 N m and pointsin the direction of increasing x, and τ2 has a magnitude of 12N m and points in the direction of decreasing y.
A mixture of red light (lambda=665 nm) and blue light (lambda=480 nm) falls on the slits separated by 0.142 mm apart. What is the distance among the third order red and blue light on a screen located 2.5 m away from slits?
a gas is compressed from 600 cm3 to 200 cm3 at a constant pressure of 400 kpa. at the same time 100 j of heat energy is
Two ball shells are nested together ( centers exerting). The smaller balls diameter is R1 and bigger ones R2, Derive capacitance of the system from its definition C=Q/I?VI
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