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A 50g ball of clay traveling at speed 6.5m/s hits and sticks to a 1.0 kg block sitting at rest on a frictionless surface.What is the speed of the block after the collision?The mechanical energy isnot conserved in this collision. What percentage of the ball's initial energy is "lost"?
A mover's dolly is used to deliver a refriger- ator up a ramp into a house. What gravitational potential energy is gained by the refrigerator
A uniform rod of length 4 m and of weight 5 N is supported at its extreme right end by a fulcrum as shown. A block of weight W = 10 N is sitting 1 m from the fulcrum. An upward force F is applied at the extreme left end. What is the force F needed..
A motor has an armature resistance of 2.5 Ohms. If it draws 10 A when running at full speed and connected to a 100 V line, how large is the back emf?
A person is riding a bicycle, and its wheels have an angularvelocity of +18.5rad/s. What is the angular acceleration of each wheel
An electrically neutral thin, square metal slab, measuring 6.00cm on a side is placed in a uniform external field that is perpendicular to its square area. What is the total charge on the negative side of the slab
An athlete grips a light rope that passes over a low-friction pulley attached to the ceiling of a gym. A sack of sand precisely equal in weight to the athlete is tied to the other end of the rope. The athlete climbs the rope, sometimes speeding up an..
A network of capacitors is mostly inside a sealed box, buit one capacitor Cx is sticking out, as shown in the figure. When you connect a multimeter across points a and b, it reads 27.0 uF. What is Cx?
Every year, there is a foot race to the top of the Empire State Building. The vertical distance traveled (using the stairs!) is about 440 m. what was his average power output during the race
A storage tank 27 m high is filled with pure water, Calculate the magnitude of the net force that acts on a square access hatch at the bottom of the tank that measures 0.6 m by 0.6 m
A ring of radius R has total charge Q. Determine the electric field strength at this point
In a game of basketball, a forward makes a bounce pass to the center. What horizontal distance does the ball cover before bouncing
As you get ready for your early morning physics class, you comb your hair in front of a planar mirror. How far away from you is your image
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