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A cat dozes on a stationary merry-go-round, at a radius of 5.4 m from the center of the ride. Then the operator turns on the ride and brings it up to its proper turning rate of one complete rotation every 6.2 s. What is the least coefficient of static friction between the cat and the merry-go-round that will allow the cat to stay in place, without sliding?
A 210 g, 49 bcm diameter turntable rotates on frictionless bearings at 54 rpm . A 25 g block sits at the center of the turntable. A compressed spring shoots block radically outward along a frictionless groove in the surface of the turntable.
A 0.200-kg block along a horizontal track has a speed of 1.40 m/s, What is the spring's maximum compression if the track is frictionless
The skater farthest out has a mass of 58.0 kg and is 7.80 m from the pivot. He is skating at a speed of 6.40 m/s. Find out the magnitude of the centripetal force that acts on him.
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0398 s, compute the vertical components of the launch velocity
a freezer with a coefficient of performance of 3.88 is used to convert 1.75 kg of water to ice in one hour. how much electrical energy does the freezer use during this hour of operation
The coil in the figure carries current i = 1.70 A in the direction indicated, is parallel to an xz plane, What is the magnetic torque (in unit-vector notation) on the coil
A 18.0cm × 18.0cm square loop of wire lies in the xy-plane with its bottom edge on the x-axis. The resistance of the loop is 0.530?. What is the size of the induced current in the loop at t = 0.550s
Since Selma had so much fun, Arnold decides to take up sky diving as well. He falls out of the plane (with a parachute) and after a long time reaches a roughly constant speed of 55m/s. How far did he drop during that time
During a recent thunderstorm the wind was blowing past your roof at 40 m/s. Assuming that the density of air is 1.20 kg/m^3, What is the net force experienced by the roof
The temperatures indoors and outdoors are 297 and 311 K, respectively. How much heat is removed from the house
Nichrome wire of cross-sectional radius 0.758 mm is to be used in winding a heating coil. find the length of wire you must use to wind the coil
A wrench is used to tighten a nut. A force of 15 N is applied a distance 8.0 cm from the axis of rotation of the nut; the lever arm is 8.0 cm long
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