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A person on a balcony that is 28 m off the ground leans over the railing and throws a ball straight up into the air with an initial velocity of 15 m/s. Find with what speed will the ball hit the ground?
Sam heaves a shot with weight 16-lb straight upward, giving it a constant upward acceleration from rest of 45.9 m/s^2 for a height 61.0 cm. How much time does he have to get out of its way before it returns to the height of the top of his head, a ..
A motorcyclist is traveling along a road. He sees another cyclist ahead and starts to accelerate for 5 seconds to pass him. What is the angular displacement of the wheels
A container holds 2.9 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 8.1x10-3 kg bullet with a speed of 750 m/s
A mass of 0.006 kg is attached to a spring that requires a force of 0.01 N to extend it 0.05 meters greater than its natural length, Find maximum velocity of spring when released from rest
A motorcyclist driving in a 60 {\rm{ km/h}} zone hits a stopped car on a level road. Find the minimum speed he could have been going just before the accident
You stand with your nose 5.0cm from the surface of a reflecting ball, and your nose's image appears three-quarters full size. What is the balls diameter?
A hunter wishes to cross a river that is 2.1 km wide and that flows with a speed of 3.8 km/h. What is the minimum time necessary for crossing
A 804 kg car is going 20 m/s and the driver has to slam on his brakes to prevent an accident. what is the change in temperature of the brake pads
a lead bullet initially at 33degc just melts upon striking a target. assuming that all of the initial kinetic energy of
what is the velocity of plane with respect to the ground. A nonconducting sphere has radius R = 2.53 cm and uniformly distributed charge q = +6.00 fC. Take an electric potential at the sphere's center to be V0 = 0.
A small ball with a mass of 49.0g and a charge of ?0.170?C is suspended from the ceiling by a string. What is the tension in the string when the second ball is directly beneath the first ball
A meniscus lens is concave on one side and convex on the other. Find the refractive power of a meniscus lens with n = 1.56 and curvature radius 29cm on the convex side and 48cm on the concave side
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