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An object of mass m undergoes an elastic collision with anidentical object that is at rest. The collision is not head-on. Show that the angle between the velocities of the two objects after the collision is 90o.
You are applying a anti reflecting coating to your plane. You don't want to be seen by radar which uses 'light' of wavelength 2cm. determine the minimum thickness of this coating
A singly charged ion (charge q = +1.60e-19 C) completes four revolutions in a uniform magnetic field, Calculate the mass of the ion in kilograms
A 2.5 kg object is attached to a horizontal spring of force constant k = 4.1 kN/m. The spring is stretched 10 cm from equilibrium and released. Find the maximum acceleration
Huck Finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion relative to the shore). What is Huck's velocity (speed and direction) relative to the river bank
A golfer hits a golf ball with a velocity of 138 mph. Determine the head velocity of the golf club. Assume the following: • Mass of golf club head (M): 190 g • Mass of golf ball (m): 46 g • Coefficient of restitution (e): 0.83
Find an expression for the volume charge density ?(r) inside the ball as a function of r. Express your answer in terms of the variables Q, r, R, and appropriate constants
A Meteorite Strikes On October 9, 1992, a 27-pound meteorite struck a car in Peekskill, NY, leaving a dent 22 cm deep in the trunk. If the meteorite struck the car with a speed of 130 m/s , what was the magnitude of its deceleration, assuming it t..
Two pianos each sound the same note simultaneously, but they are both out of tune. On a day when the speed of sound is 347 m/s, How much time separates successive beats
An oil film with n = 1.45 floats on water. It is illuminated by white light from the sun at noon. If the film is 280 nm thick, find the wavelength and color of visible light that is most strongly reflected upward to an observer positioned above th..
It is desired to magnify reading materal by a factor of 2.5xwhen a book is placed 8.0 cm behind a lens. What is the power of the lens in diopters
When a converging lens is used in a camera (as in the first drawing), the film must be placed at a distance of 0.240 m from the lens to record an image of an object that is 3.80 m from the lens. How far from the projector lens should the film be pl..
A charge of -2.20 micro coulombs is located at (3.00m, 4.50m), and a charge of +3.60 micro coulombs is located at (-2.8m, 0m).
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