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A 9000-kg boxcar traveling at 16.0 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 6.00 m/s. What is the mass of the second car?
A hunter on a frozen, essentially frictionless pond uses a rifle that shoots 4.20g bullets at 960m/s. Find the recoil velocity of the hunter if he fires the rifle horizontally
A lava bomb is a missile composed of cooling, practicallysolid lava. You are a geologist, watching a volcano launch a lava bomb straight upward. find the Initial Speed at which the lava bomb got launched
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.744 rev/s. find the initial and final kinetic energies for this system
A basketball player is standing on the floor 10.0 m from the basket. The height of the basket is H = 3.05 m, and he shoots the ball at an angle, ? = 36.4°, with the horizontal from a height of h = 1.82 m.
Find the speed of the waves on an 800.0 mg violin string 21.7-cm long if the fundamental frequency is 912.0 Hz. find the wavelength of the sound waves emitted by the string
A tennis player receives a shot with the ball of mass 0.058kg travelling horizontally at v=45 m/s and returns the shot with the ball travelling horizontally at 51 m/s in the opposite direction.
Two boxes A and B are connected to each end of a light vertical rope. A constant upward force 80.0 is applied to box. Starting from rest, box descends 10.4 in 3.40. The tension in the rope connecting the two boxes is 37.0
A rifle is aimed horizontally at a target 1,234.37 m away. What is the bullet's time of flight
A sphere of aluminum 11.3 cm in diameter is suspended in oil (density = 1 grams/cm3). Find the tension in the supporting string in Newtons
A .41m copper rod w/ mass .17 kg carries a current of 13A in the positive x direction. Let upward be the positive y direction. What is the magnitude of the minimum magnetic field
An electron is projected vertically upward with a speed of 1.65x10^6 m/s into a uniform magnetic field of 0.160 T that is directed horizontally away from the observer. What would the radius of the circle be.
A large electromagnet coil is connected to a 118 -Hz ac source. The coil has a resistance 450 ohms, What is the inductance of the coil
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