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An archer shoots an arrow toward a 300 gram target that is sliding in her direction at a speed of 300 m/s on a smooth, slippery surface. The 22.5 gram arrow is show with a speed of 36.5 m/s and passes through the target, which is stopped by the impact. Find what is the speed of the arrow after it passing through the target?
a bicycle racer is going downhill at 11.0 m/s when, to his horror, one of his 2.25 kg wheels comes off when he is 75.0 m above the foot of the hill. how much total kinetic energy does the wheel have when it reaches the bottom of the hill
A horizontal 799-N merry-go-round is a solid disk of radius 1.45 m, started from rest by a constant horizontal force of 49.9 N applied tangentially to the edge of the disk
A uniform magnetic field points north; its magnitude is 4.8 T. A proton with kinetic energy 7.5 10-13 J is moving vertically downward in this field. What is the magnetic force acting on it
when a billard ball hits another billarid ball then other ball is maving but striking ball also move some distance why
What is the resistance of the light bulb? A light bulb is wired in series with a 120-? resistor, and they are connected across a 120.0-V source
a container of ideal gas for which the thermal energy is given by eth 2.6 n r t is initially at pressure pi 1.1 x
A hydrogen atom is in its first excited state (n = 2). Using the Bohr theory of the atom, calculate (a) the radius of the orbit, (b) the linear momentum of the electron.
If the proton is fired at a speed of 3.0×107m/s , what is its closest approach to the surface of the nucleus? Assume the nucleus remains at rest
Using their ship’s engine, they pull on the asteroid with a force of 490 N. Initially the tug and the asteroid are at rest, 450 m apart. Explain how much time does it take for the ship and the asteroid to meet?
a 1120 kg car experiences an impulse of 30000.0 n middot s during a collision with a wall. if the collision takes 0.43
Two particles of masses M1 = 93000 kg and M2 = 4200 kg are initially at rest an a distance 148.1 km apart. The masses are let go, and as a result of the gravitational force the two masses move towards each other.
Use 9.81 for the magnitude of the acceleration due to gravity.
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