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A horizontal force of 750 N is needed to overcome the force of static friction between a level floor and a 250-kg crate. If g = 9.8 m/s^2, what is the coefficient of static friction?
A textbook of mass 2.10 rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose diameter is 0.180 , to a hanging book with mass 2.92. find the mmoent of inertia of the pulley about its rotation axis
Two circular coils of current-carrying wire have the same magnetic moment. The first coil has a radius of 0.095 m, What is the radius of the second coil
A small circular hole 7.00 in diameter is cut in the side of a large water tank, 25.0 below the water level in the tank. The top of the tank is open to the air.
To which, according to the rotational analog of Newton's second law, is the angular acceleration experienced by an object directly proportional?
A student holds a tuning fork oscillating at 260 Hz. He walks towards a wall at a constant speed of 1.16 m/s. How fast must he walk away from the wall to observe a beat frequency of 4.50 Hz
Visible light of wavelength 480 nm is incident on a diffraction grating with a slit spacing of 0.003 mm
The cheetah is one of the fastest accelerating animals, for it can go from rest to 26.8 m/s in 3.89 s. determine the average power developed by the cheetah during the acceleration phase of its motion
A well-insulated piston- cylinder device contains 6kg of superheated R-134a initially at 0.10Mpa and -10 degrees Celsius is compressed to a final state at 0.50mpa and 80 degrees Celsius. find the work required for this compression process
A car goes 13 miles east, then due North ending up 25 deg North of East from its initial position. How far due North did it travel
A converging lens (f = 13.0 cm) is held 6.20 cm in front of a newspaper, the print size of which has a height of 2.20mm. Find (a) image distance (in cm) and (b) height (in mm) of the magnified print.
Find the maximum usable magnification for the 200 inch Hale telescope of the Mt. Palomar observatory
Chip rolls a ball down an incline (without slipping) at the same time Emmanuel slides a frictionless block with the same mass down the incline
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