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Unpolarized light passes through two Polaroid sheets. The transmission axis of the analyzer makes an angle of 40.1° with the axis of the polarizer.
(a) What fraction of the original unpolarized light is transmitted through the analyzer?
(b) What fraction of the original light is absorbed by the analyzer?
A 650-N physics student stands on a metric bathroom scale inside an elevator. The elevator (including the student) has a total mass of 875 kg. What is the tension on the elevator cable in both cases
A sample of an ideal gas is at a temperature of 307 K. The rms molecular speed at this temperature is measured as 2767 m/s. Calculate the average molecular kinetic energy of this sample
An "energy bar" contains 18g of carbohydrates. If the energy bar was his only fuel, how far could a 68kg person walk at 5km/hr
A parachutist descending at a speed of 10.0 m/s loses a shoe at an altitude of 30.0 m. (Assume the positive direction is upward.). Explain when does the shoe reach the ground? What is the velocity of the shoe just before it hits the ground?
A toriod with a square cross-sectional area A = a x a m2 , has an inner radius R and and outter radius R+a. What are the bound currents in the Toroid
A spring has a force constant of 931N/m and an unstretched length of 8 cm. One end is attached to a post that is free to rotate in the center of a smooth table.
A car of mass M = 1100 kg traveling at 45 km/hour enters a banked turn covered with ice. The road is banked at an angle theta, and there is no friction between the road and the car's tires.
q1. an archer puts a 0.54 kg arrow to the bowstring. an average force of 202 n is exerted to draw the string back 1.3
q1. the red giant betelgeuse has the surface temperature of 4000 rm k and is 500 times the diameter of our sun. if our
You have been visiting a distant planet. Your measurements have determined that the planet's mass is two times that of earth but the free-fall acceleration at the surface is only one-fourth as large. What is the planet's radius
A parachutist jumps out of an airplane and acceleratea with gravity to a maximum velocity of 58.8 m/s in 6.o seconds, From what height did the parachutist jump?
Four identical charges (+2.0 ?C each) are brought from infinity and fixed to a straight line. Determine the electric potential energy of this group
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