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A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 68.7° above the horizontal. The rocket is fired toward an 11.0 m high wall, which is located 21.5 m away. The rocket attains its launch speed in a negligibly short period of time, after which its engines shut down and the rocket coasts. By how much does the rocket clear the top of the wall?
An ocean liner leaves New York City and travels 39.0° north of east for 140 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship's displacement vector in the following directions.
A player bounces a basketball on the floor, compressing it to 80.0 of its original volume. The air (assume it is essentially gas) inside the ball is originally at a temperature of 20.0 and a pressure of 2.00 atm. The ball's diameter is 23.9 .
Suppose that a high-energy particle accelerator accelerates an electron to such great speed that its relativistic mass becomes as large as the rest mass of a proton. Calculate the speed of this electron
In order for Sasha (in A-5) to feel weightless at the top of the ride, a) at what linear speed must the Ferris wheel tum? b) At this speed, how much would she appear to weigh at the bottom of the Ferris wheel.
A golden retriever is sitting in a park when it sees a squirrel. What is the magnitude of the dog's change in momentum
A basketball player makes a jump shot. The 0.606 kg ball is released at a height of 2.18 m above the floor with a speed of 7.26 m/s. What is the work done on the ball by air resistance, a nonconservative force
An elevator 700000 N is accelerating downward at the rate 4.55 ft/s^2. The maximum tension that the cable can handle is 125000 N. What is the shortest distance the elevator could travel?
Two point charges Q1 = +5.25 nC and Q2 = ?2.15 nC are separated by 40.0 cm, What is the electric potential at a point midway between the charges
A 13 g bullet traveling 230 m/s penetrates a 2.0 kg block of wood and emerges going 170 m/s. how fast does it move after the bullet emerges
A flight attendant pulls her 65N flight bag a distance of 388m along a level airport floor at a constant velocity. The force she exerts is 38 N at an angle of 51° above horizontal.
rate at which mechanical energy is transferred to the turbine blades, assuming 60 percent efficiency.
the final equilibrium temperature of the tin- water mixture.
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