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Cranes utilize a system of two pulleys to provide mechanical advantage, which reduces the force they need to apply to lift a particular weight (two such possible configurations are shown in the figure). A crane is attempting to lift a compact car with a mass of m=1169kg under the force of gravity.
a flat coil of wire consisting of 20 turns, each with an area of 50 cm^2, is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 2 T to 6T in 2 sec
Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 62.9 N, Jill pulls with 87.7 N in the northeast direction, What is the direction of the net force
A deep-space vehicle moves away from the Earth with a speed of 0.885c. An astronaut on the vehicle measures a time interval of 2.80 s to rotate her body through 1.00 rev as she floats in the vehicle. What time interval is required for this rotation a..
It takes 7.60 ms for the current in and LR circuit to reach 60 percent of its maximum value. Decide the time constant of the circuit.
You attach a meter stick to an oak tree, such that the top of the meter stick is 2.67 meters above the ground. how high above the ground was the acorn before it fell
A house is 30.0 ft long and 32 ft wide, and has 8.0 ft high ceilings. What is the volume of the interior of the house
one solenoid is centered inside another. the outer one has a length of 45.0 cm and contains 6800 coils, what is the EMF induced in the inner solenoid
The wire is cut at point P. Will the potential difference between points A and B increase, decrease, or remain the same? Give reason for.
The time separating high tides is 12 hours and 25 minutes. Assume that the high tide occurs at 3:30 p.m. one afternoon. At what time will high tide occur the next afternoon
The masses of astronauts are monitored during long stays in orbit, such as when visiting a space station. What is the mass of an astronaut who has an oscillation period of 2.00 s when in the chair
Two long parallel wires carry unequal currents in the similar direction. The ratio of the currents is 3 to 1. The magnitude of the magnetic field at the point in the plane of the wires and 10 cm from each wire is 4.o uT. What is the larger of the two..
A coin 2.3 cm in diameter is held 37 cm from a concave spherical mirror of 40 cm radius of curvature. Locate the image of the coin
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