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A 50 W light bulb shines through two polarizers. After having passed through the first polarizer, the electric field incident on the second polarizer is 5.0 V/m. The second polarizer sits at a 25° angle from the first polarizer. What is the electric field immediately after having passed through the second polarizer?
A radio antenna broadcasts a 1.0 MHz radio wave with 28 kW of power. What is the electric field amplitude at this distance
q1. when blue light of wavelength 450 nm falls on a single slit the first dark bands on either side of center are
In a physics laboratory experiment, a coil with 210 turns enclosing an area of 13cm^2 is rotated from a position, What is the average emf induced in the coil
Two cars are traveling along a straight road. Car A maintains aconstant speed of 82 km/h and car Bmaintains a constant speed of 90 km/h.At t = 0, car B is 39 kmbehind car A. How much farther will car A travel before car B overtake sit?
A bullet is shot straight up into the air. It takes 30.5 s for the bullet to go straight up and fall back straight down to its starting position. At what initial speed (in m/s) was the bullet shot into the air
copper has 8.5 x 10^28 electrons per cubic meter. if a current of 1.55 A is flowing in the wire, what is the average drift speed of the electrons along the wire
120-v rms signal at 60.0hz is applied across a 30.0mH inductor and a 100 resistor. what is the rms value of the voltage across the inductor
You put a kettle on to boil and forget about it so that all the water boils away. what is the change in entropy of the water once it has all turned to steam
a double-slit arrangment prduce bright interference fringrs that are seprated by 2.60 mm when the wavelengt is 589nm. what is the bright fringe separation
An object made of a single atomic element weighs 2.4500 N in air and 2.1387 N when completely submerged in water. Calculate the density of the object
The wheel of the car has a radius of 0.340 m. The engine of the car applies a torque of 282 N•m to this wheel, that does not slip against the road surface. Since the wheel does not slip, the road must be applying the force of static friction to the w..
An electric motor with a power of 3W is used to lift a .2 kg mass a height of 0.5 meters in 3.0 seconds, since total energy must be conserved
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