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A catapult launches a rock at at 50 degree angle with respect to the horizontal. Find the maximum height attained if the speed of the rock at its highest point is 26m/s.
A high-voltage transmission line with a resistance of 0.28 omegacap.gif/km carries a current of 1040 A. What fraction of the transmitted power does this loss represent
A puck slides on a surface for 5.6 m before it stops. If it was moving at a velocity of 15 m/s and has a mass of 1.2 kg, what is the force of friction exerted on the puck
A ball is kicked with initial velocity of 14.9 m/s in the horizontal direction and 15.7 in the vertical direction. At what speed does the ball hit the ground
You drop a stone into a deep well and hear it hit the bottom 2.60 s later. This is the time it takes for the stone to fall to the bottom of the well.
If the hanging 13.8 kg block falls a distance 0.633 m before coming to rest, calculate the coefficient of kinetic friction between the block m1 and the surface
A 75.0 kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. how fast was the ball travelling
Illustrate at what horizontal distance, x, from the base of the building will the rock strike the ground? Assume the ground is level and that the side of the building is vertical. The acceleration of gravity is 9.8 m/s2 .
On a frictionless horizontal surface below, a 1.5 kg mass traveling at 2.5 m/s collides with and sticks to a 3 kg mass that is initally at rest, What will be the max compression of the spring
Two skaters, one with mass 65 kg and the other with mass 80 kg, stand on an ice rink holding a pole of length 9 m and negligible mass. How far does the 80 kg skater move
A wind turbine with a rotor diameter of 50 m is rated at 2500 kW at a hub height wind speed of 10 m/s. Calculate the number of hours per year that the wind is below the cut-in speed
Seat belts and air bags save lives by reducing the forces exerted on the driver and passengers in an automobile collision. Cars are designed with a "crumple zone" in the front of the car. Estimate the net force that ultimately stops the person
An 8.05-kg stone at the end of a steel (Young's modulus 2.0 x 1011 N/m2) wire is being whirled in a circle at a constant tangential speed of 19.7 m/s. Find the strain in the wire
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