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A block with a mass m1=60 kilogram sitting on a frictionless table is connected to a suspended mass m2=2.0 kilogram by a light string passing over a frictionless pulley. Using energy considerations, calculate the speed of which mass m2 hits the floor after descending 0.75 meter.
A solid, uniform ball rolls without slipping up a hill, How far from the foot of the cliff does the ball land
Two bumper cars moving on a frictionless surface collide elastically. The first bumper car is moving to the right with a speed of 21.5 m/s and rear-ends the second bumper car, which is also moving to the right with a speed of 5.00 m/s. What is the sp..
In a skating stunt, a number of skaters hold hands and form a straight line. obtain the magnitude of the centripetal force that acts on him
In compressing the spring in a toy dart gun, 0.6 J of work is done. When the gun is fired, the spring gives its potential energy to a dart with a mass of 0.08 kg, What is the dart's speed
A 3.80 m-long, 430 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 kg construction worker stands at the far end of the beam. What is the magnitude of torque abou..
Your cell phone typically consumes about 440 mW of power when you text a friend. what is the current flowing through the cell-phone circuitry under these circumstances
Determine the scattering angle of the photon and the electron
An object is accelerated by a force. If the force is increased by a factor of 3 and the mass is increased by a factor of 4, by what factor will the acceleration change
You're planning to study in Europe, and you want a transformer designed to step 230 V. how many should the secondary have
A wildland fire sawyer is cutting a snag of length L = 23.5m and mass m = 880kg. He puts a Humboldt face cut on the snag which has a negligible amount of taper, what is the final angular velocity of the snag
An asteroid is discovered heading straight toward Earth at 14 km/s . An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10minutes , after which the asteroid is moving at 28degrees to its original pa..
a bicycle has wheels with a 30-centimeter radius. if smaller wheels with a 25-centimeter radius are installed what is
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