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A uniform meter stick of mass M is pivoted on a hinge at one end and held horizontal with a spring with spring constant k attached at the other end. If the stick oscillates up and down slightly, what is its frequency? [Hint: Write a torque equation about the hinge.]
A skier with a mass of 60 kilogram is pulled up a slope by a motor driven cable. Find what power must a motor have to perform this task
A closed hollow sphere of radius R=60.0cm (the surface area of asphere of radius R is 4πR^2) is made of styrofoam havingthermal conductivity k=0.0450 watt/m celsius, find the thickness(assumed uniform) of the styrofoam wall of thehollow sphere
Consider a circuit consisting of a lightbulb and a capacitor. Part A:If the frequency of the generator is increased, does the intensity of the lightbulb increase, decrease, or stay the same? Part B:Choose the bestexplanation from among the following:
A hydraulic lift is lifting a car that weighs 13 kN. The area of the piston supporting the car is A, How far must the small piston be pushed down to raise the car a distance of 1.3 cm
Two forces act on a block of wood. The first force has a magnitude of 8.66 N in a direction 12.0 degrees counterclockwise from the positive x-axis, What is the magnitude of the resulting force
Bruce stands on a bank beside a pond, grasps the end of a 20.0m long rope attached to a nearby tree and swings out to drop into the water. what is Bruce's speed at the botton of the swing
You are standing at rest with respect to the earth holding a lance which you measure as 10 meters long. Which lance hits the other person first
Tam walks with the velocity of 1.8 m/s west. He does so while riding on a conveyor belt that moves at a velocity of 0.7 m/s west. What is Tam's velocity.
A 64.0-kg survivor of a cruise line disaster rests atop a block of Styrofoam insulation, using it as a raft. What total mass of survivors can the raft support
A large, hot pizza 86 cm indiameter and 2.0 cm thick, with a temperature of 104°C, floats in outer space. What is the order of magnitude of its rate of energy loss
A bat at rest sends out ultrasonic sound waves at 49.4kHz, What is the received sound frequency
you and a friend pull on two ropes to dock a satellite whose mass is 1300 kg. The satellite is initially at position m, How much work did your friend do
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