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Riders on a Ferris wheel move in a circle with a speed of 4.50. As they go around, they experience a centripetal acceleration of 2.40 . What is the diameter of this particular Ferris wheel?
a person with a remote mountain cabin plans to install her own hydroelectric plant. a nearby stream is 3.00 m wide and
A missile of mass 1.20 102 kg is fired from a plane of mass 4.85 103 kg initially moving at a speed of 3.35 102 m/s. what is the final velocity of the plane?
A Carnot air conditioner takes energy from the thermal energy of a room at 294 k and transfers it as heat to the outdoors, which is at 309 k. for eacg joule of electric energy needed to operate the air conditioner, how many joules are removed from..
Starting from rest, a 4.30-kg block slides 2.00 m down a rough 30.0° incline. Determine the work done by the force of gravity
An ideal monatomic gas initially has temperature Ti and pressure pi. It is to expand from volume Vi to volume Vf. If the expansion is isothermal, what are the final pressure and the work done by the gas
An electron remains in an excited state of an atom for typically 10-8 s. What is the minimum uncertainty in the energy of the state
A 55 kg swimmer is standing on a stationary 225 kg floating raft. The swimmer then runs off the raft horizontally with a velocity of +4.7 m/s relative to theshore. Find the recoil velocity that the raft would have if there were no friction and resist..
Three moles of a monatomic ideal gas are heated at a constantvolume of 2.40 m3. Theamount of heat added is 4.72 103 J. What is the change in the temperature of the gas
A ball is thrown directly downward with an initial speed of 8.60 m/s, After what time interval does it strike the ground
a large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless vertical
A 2 kg object is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of 20.0 N is needed to hold the object at rest when it is pulled 0.200 m from its equilibrium position.
A 10-kg box is stationary on the ground and pushed by a downward force of 30 N. Calculate the supporting normal force acted on the box from the ground
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