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Unpolarized light falls on a stack of three polarized sheets. The transmission axes of the top and bottom sheets are at 90 degrees by respect to each other. The middle sheet has its transmission axis aligned at 45 degrees by respect to the top and bottom sheets. What fraction of incident unpolarized intensity is transmitted during the stack?
A photon of wavelength 0.1800 nm strikes a free electron that is initially at rest, What is the energy of the photon (in eV) after it has scattered from the electron
A 100-W resistance heater is connected to a 110-V doc source. What current flows through the heater
A magnifier used for reading small print is shaped like a hemisphere 2.0 cm in radius, placed on top of a cylinder of the same radius, Where does the image of the print appear to be
A roller coaster descends 35 meters in its initial drop and then rises 23 meters before going over the first hill. what is the radius of curvature of the first hill
A uniform can with mass M and height H is filled to the top with water. The initial mass of the water is 2M, What is the minimum height of the center of mass as the water drains out
In the series ac circuit where R = 420Ω, L = 0.20 H, C =1.2 μF (10-6), the ac power supply is ε = 60 sin(1500 rad/s t) V.
At its Ames Research Center, NASA uses its large "20-G" centrifuge to test the effects of very large accelerations (hypergravity) on test pilots and astronauts. In this device, an arm 8.84m long rotates about one end in a horizontal plane, and the..
A ball is thrown straight up in the air at an initial speed of 30 m/s. Using conservation of energy, find the maximum height of the ball
Many years ago the Federal Communications Commission (FCC) assigned Microwave Ovens two different operational frequencies. Some of the very old microwave ovens used a frequency of 915 MHz rather than the current 2450 MHz that is almost exclusively..
A sinusoidal wave travels along a stretched spring. A point along the string has a maximum velocity of 1.0 m/s and a maximum displacement of 2cm. What is the maximum acceleration at that point
a professional golfer is examining a video of a practice swing. the high-speed footage shows that his club is in
A current of 0.80A flows through a copper wire 0.50mm in diameter, How long is the wire in km
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