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A daredevil stunt rider is attempting to jump a stack of automobiles 35 ft high. If the ramp angle is 30 degrees, what is the velocity she should have leaving the ramp, and how far from the car stack must the ramp departure point be place?
To help prevent frost damage, fruit growers sometimes protecttheir crop by spraying it with water when overnight temperatures are expected to go below the freezing mark. How much heat is releasedby the water when it freezes
A block of inertia .2 kg is launched from a spring onto a frictionless surface. The velocity it has upon leaving the spring is 2.5 m/s. What is the impulse delivered to the block by the wall
A soccer player kicks the ball toward a goal that is 27.0 m in front of him. Find the speed of the ball when the goalie catches it in front of the net
an electron moves through an electric field and its speed drops from 2800 ms to 1900 ms. whats the potential difference
If his arms are capable of exerting a force of 1400 on the vine, what is the maximum speed he can tolerate at the lowest point of his swing? His mass is 82, and the vine is 6.00 long.
A 42.0-kg boy, riding a 2.29-kg skateboard at a velocity of +5.82 m/s across alevel sidewalk, jumps forward to leap over a wall. Just afterleaving contact with the board, the boy's velocity relative to thesidewalk is 5.40 m/s, 9.90° above the horizon..
A Boeing 747 "Jumbo Jet" has a length of 59.7 m. The runway on which the plane lands intersects another runway, How much time is needed for the plane to clear the intersection
A 0.420 kilogram pendulum bob passes through the lowest part of its path at a speed of 3.30 m/s. find what angle does the cable make with the vertical
Space vehicles traveling through Earth's radiation belts can intercept a significant number of electrons, Find the resulting surface charge density
A symmetric bi-covex lens has radii of curvature R and athickness of d. Find its focal length using matrix methods
A mass of 10kg is sliding up a frictionless plane inclined at 10 degree. How far does the mass move up along the plane
A railroad freight car, mass 15,000 kg, isallowed to coast along a level track at a speed of 2.0 m/s. Itcollides and couples with a 50,000 kg loaded second car, initiallyat rest and with brakes released.
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