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The ball launcher in a pinball machine has a spring that has a force constant of 1.23 N/cm. The surface on which the ball moves is inclined a = 16.0 deg. with respect to the horizontal. If the spring is initially compressed 4.96 cm, find the launching speed of a 0.133 kg ball when the plunger is released. Friction and the mass of the plunger are negligible.
The reel has radius R and moment of inertia I. One end of the block of mass m is connected to a spring of force constant k, and the other end is fastened to a cord wrapped around the reel. The reel axle and the incline are frictionless. The reel i..
You're a marine biologist concerned with the effects of sonic booms on plankton, and you need to estimate the altitude of a supersonic aircraft flying directly over you at 1.1 times the speed of sound
You have a ball on a wire that is twirled in a circular orbit with a radius of 3.8 m, and the centripetal force acting on the ball, What is the speed of the ball in orbit
A rightward force of 15 N is applied 35 degrees above the horizontal to a 6 kg box to move it across a rough surface. Calculate the acceleration of the object
A electron emits radiation of wavelength 255 nm Calculate the maximum kinetic energy of the electron ejected, Calculate the de Broglie wavelength of the ejected electron
A bullet is fired into a block of wood sitting on a block if ice. The bullet has an initail velocity of 500m/s and a mass of 0.005 kg. The wooden block has a mass of 2kg and is initially at rest.
Calculate the angular wave number and the speed of the wave.
A child throws a ball downward from a tall building. Note that the ball is thrown, not dropped and disregard air resistance. What is the acceleration of the ball immediately after it leaves the child's hand
A) What is the Boiling Point (Temperature) of Water?
A pendulum consists of a mass m = 0.120 kg hanging from a flexible string of length L. Find the oscillation frequency of the pendulum
The drawing in problem 11 chapter 9 shows a person (W=584N) doing push ups. Find the normal force exerted by the floor on each hand
Suppose you have a spherical balloon filled with air at room temperature and 1.0 atm pressure; its radius is 11 cm. what's the balloon's new radius
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