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You pull downward with a force of 28 N on a rope that passes over adisk-shaped pulley of mass 1.2 kg and radius 0.075 m. The other endof the rope is attached to a 0.67-kg mass.
(a) Is the tension in the rope the same on bothsides of the pulley? If not, which side has the argest tension?
(b) Find the tension in the rope on both sides ofthe pulley.
A golf club has a lightweight flexible shaft with a heavy block of wood or metal (called the head of the club) at the end. A golfer making a long shot off the tee uses a driver, What is the speed of the club head immediately after the collision
A piece of wood of density of mass 5kg is 400 x 500 x 300mm thick. When it is floating water, how much of this thickness h is submerged, What is the weight of this substance
an electron trapped in a one-dimensional infinite potential well 170 pm wide is in its ground state. how much energy
A flywheel turns through 26 rev as it slows from an angular speed of 6.3 rad/s to a stop.
A boat takes 3.2 hours to travel 28.01 km down a river, then 5.5hours to return. How fast is the river flowing
a person standing at the edge of a cliff throws a stone horizontally over the edge with a speed of vi 32.4 ms. the
Box moves back and forth on a horizontal frictionless surface between two different springs, as shown in the accompanying figure. The box is initially pressed against the stronger spring, compressing it 4.1cm , and then is released from rest
Two converging lenses having focal lengths of f1 = 10.9 cm and f2 = 20.0 cm are placed d = 50.0 cm apart. What is the overall magnification of the system
A diffraction pattern forms when light passes through a single slit. The wavelength of the light is 665 nm. Determine the angle that locates the first dark fringe when the width of the slit is each of the following.
Old naval ships fired 10kg cannon balls from a 250 kg cannon. It was very important to stop the recoil of the cannon, as otherwise the heavy cannon would go careening across the deck of the ship.
An object of mass 10 kg is initially at rest. What is the change in the kinetic energy of this object
Two forces are applied to a tree stump to pull it out of the ground. Force A has a magnitude of 2160 newtons and points 33.0° south of east, while force B has a magnitude of 3160 newtons and points due south. Using the component method, find directio..
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