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A 1-Kg object is atteched to a cord which is wrapped around a cylindrical pulley. The pulley is installed on a wall at a height of 10 meters and has a mass of 5-kg and a radius of 10 cm. Find the speed of the object just before hitting the ground, if the object is released (Use conservation of energy).
You stand on the shore of a small river that measure 10 meters across. You take your cat and throw it into the middle of the stream. How long did it take the cat to reach you
Two blocks are connected by a light but sturdy string wrapped around a mass-less pulley. What is the magnitude N of the normal force on the block of mass m
A rock is thrown down a well that is 8.85 meter deep. The splash is heard 1.20 sec later. Evaluate how deep is the well
measured counter-clockwise from the x axis
An office window has dimensions 3.4 m by 1.7 m. As a result of the passage of a storm, the outside air pressure drops to 0.95 atm, but inside the pressure is held at 1.0 atm.
2 parallel straight wires are 9.0 cm apart and each caries a 10.0 a current in the same direction. one wire is securely
A flashlight bulb carries a current of 0.18A for 77s. How much charge flows through the bulb in this time
A block with mass of 4.52 kg is attached to a horizontal spring with spring constant k = 3.59 102 N/m, Find the speed of the block at the equilibrium point
A 0.70-kg disk with a rotational inertia given by MR2/2 is free torotate on a fixed horizontal axis suspended from the ceiling. A string is wrapped around thedisk and a 2.0-kg mass hangs from the free end.
What is the threshold frequency for the photoelectric effect of uranium (phi = 3.6 eV)
A 235 kilogram merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 meter is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. Find what constant force would have to be exerted on the ro..
A pulley rotating in the counterclockwise direction is attached toa mass suspended from a string. The mass causes the pulley'sangular velocity to decrease with a constant angular accelerationα = -2.1 rad/s2.
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