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A daredevil on a motorcycle leaves the end of a ramp with a speed of 30.5 m/s as in the figure below. If his speed is 28.7 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance.
m
In seawater, a life preserver with a volume of 4.00×10?2 m^3 will support a 70.0 kg person, find the density of the material composing the life preserver
A wheel 2.25 m in diameter lies in a vertical plane and rotates about its central axis with a constant angular acceleration of 3.50 rad/s2, find the angular position of the point P
Assume that the cell is floating on the surface of water, and that the water surface has a coefficient of friction of u=0.300. You now want to use a laser to move cell horizontally, along the surface of the water.
Four equal positive point charges, each of charge 5.7?C , are at the corners of a square of side 9.2 cm. What charge should be placed at the center of the square
A very long, straight solenoid with a cross-sectional area of 6.00cm2 is wound with 40.0 turns of wire per centimeter, What is the average induced emf in the secondary coil
A wire loop bent into the shape of a square with 1.5 m sides is centered on the origin of the xy-plane. what current is present in the square wire
A 3.25-kg object is moving in a plane, with its x and y coordinates given by x = 2t2 ? 4 and y = 4t3 + 4, Find the magnitude of the net force acting on this object
You are standing at the rear end of a raft that is 6.0 m long. The raft has a uniform mass of 120 kg and is at rest on a lake. how far are you from the end of the pier
A 23kg chimpanzee hangs from the end of a horizontal, broken branch of length L_0 = 1.6m, What is the shear modulus for this branch
A transformer on a pole near a factory steps the voltage down from 3600 V (rms) to 120 V (rms). determine the power delivered to the primary
The Space Shuttle travels at a speed of about 7.60 103 m/s. The blink of an astronaut's eye lasts about 120 ms. How many football fields (length = 91.4 m) does the Shuttle cover in the blink of an eye?
A spherical balloon has a radius of12.5m, and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of600kg
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