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A Hollow sphere of mass 6 kg and radius 1.2 meters is rolling without slipping on a horizontal surface with a velocity of 2 m/s. It collides perfectly elastically with a Solid sphere of mass 10 kg and radius .8 meters initially at rest. Find the vf and wf of both balls after the collision.
An unknown piece of material with a mass of 5.1 kg and density of 1422 kg/m3 is suspended from a string, Determine the volume of the piece of material
An 250 kg air hockey puck is tied to a peg. The puck is given a push and moves around the peg at a constant speed in a circle. What is the acceleration of the puck
A particular engine has a power output of 4.00 kW and an efficiency of 23.0%. Assume the engine expels 7000 J of energy in each cycle. Find the energy absorbed in each cycle
A 1.0-cm-wide diffraction grating has 1300 slits. It is illuminated by light of wavelength 560 nm. What is the angle (in degrees) of the first diffraction order? What is the angle (in degrees) of the second diffraction order?
The resolution of the eye is ultimately limited by the pupil diameter. What is the smallest diameter spot the eye can produce on the retina
The energy flow per unit time per unit area (S) of an electromagnetic wave has an average value of 601 mW/ m2
An 85 kg spacewalking astronaut pushes off a 655 kg satellite, exerting a 115N force for the 0.600 s it takes him to straighten his arms.
A 10.0 m rope of negligible mass connects two astronauts, each having a mass of 75.0 kg. find the initial angular momentum of the system
a spring has a length of .248m when a .300kg mass hangs from it, and a length of .750m when a 2.22kg mass hangs from it. what is the unloaded length of the spring
Brakes cause a frictional force of 2.5 N to the left to stop a 0.975-kg toy car traveling on a level surface at 3.75 m/s to the right. Calculate how far the car will travel while the brakes are being applied before the car finally stops.
According to the law x =a sin2(wt - pi/4), a point moves along the x axis, Find the amplitude & period of oscillations
Two identical blocks of mass m are connected by a cord of length l that runs over a massless frictionless pulley, as shown below. One mass sits on a frictionless horizontal table. Now suppose that the string has a total mass M, which is distributed u..
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