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The graph below is a plot of the vertical displacement y(0, t) versus time t for a sinusoidal wave moving in the positive x direction along a taut string with a wavelength of22.5 cm. Find the speed of the particle at x = 0 at time t = 1.6 s. (Indicate the direction with the sign of your answer.) cm/s
The balloon is filled with helium at a density of 0.181 kg/m3. At this density the balloon is spherical with a radius of 0.400 m. If the filled balloon is fastened to a vertical line,
A Ferris wheel is moving at an initial angular velocity of 1.0 rev/37 s. If the operator then brings it to a stop in 3.2 min, what is the angular acceleration of the Ferris wheel
Two .40 kg soccer balls collide elastically in a head on collision. The first l starts at rest and the second ball has a speed of 3.50 m/s after the collision, second ball is at rest. What is the final speed of the first ball.
A large negatively charged metal plate is lying horizontally, as in the picture below. A positively charged conducting ball is located, as shown, above the plate. Points A and B are points in space, not charges.
A ray in air is incident on a glass plate whose index of refraction is 1.68. Determine the angle of refraction is one-half the angle of reflection. The angle of refraction is closest to?
point a is at position 4j -3kcm. point b is at position -3cm k. point c is at position 3i -2j 5k cm. point d is at
A spherical mirror is polished on both sides. When used as a convex mirror, the magnification is +1/8. Find the magnification when used as a concave mirror
You have carefully prepared the wave function of an electron to be in the first energy eigenstate of an infinite potential well spanning a length a. Now you decide to release the electron from the prison by turning off the infinite potential barri..
You combine two thin lenses by placing them in contact so that their axes coincide, Find the focal length of this compound lens
A cannon at ground level launches a cannonball horizontally. If the cannon fires with a velocity of 28.3 m/s and at an angle of 30 degrees, How far will the cannon ball travel
A soap film formed in a loop of wire is, because of its weight, not exactly uniform in thickness, but wedge-shaped in cross section. By how much does the film differ in thickness over the distance
Mrs.T boards plane A and her class boards plane B. The two airplanes leave the airport at the same time. Mrs. T's plane is flying at a heading of 120 degrees and the class plane is traveling at 320 degrees.
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