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In order to decrease the intensity of a beam of unpolarized light to 10% of its original intensity using two polarizers, what is the required value of %u03B8, the angle between the transmission axes of the two polarizers?
What minimum horsepower must a motor have to be capable to drag a 290 box along a level floor at a speed of 1.05 if the coefficient of friction is 0.50.
A glass plate 2.5 cm long is separated from another glass plate by a strand of someone's hair (diameter 0.010 mm). How far apart are the adjacent interference bands
An electron in an oscilloscope is accelerated as a result of the potential difference between the cathode and anode. The electron has negligible initial speed and a final speed of 4.60 107 m/s. Find the voltage drop from cathode to anode.
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles, What is the force between the two alpha particles when they are 5.20 10-15 m apart
What centripetal force does an 80-kg passenger experience when seated 12 m from the center of the Ferris wheel whose angular speed is 0.50 rad/s.
a ball moving at 5m/s collides head on elastically with a ball at rest. what are the velocities or the two balls after the collision
a stone is projected at a cliff of height h with an initial speed of 44.0 m/s directed at an angle θ0 = 62.0° above the horizontal. find the height h of the cliff
A tunnel of length L = 146 m, height H = 7.7 m high, and width 5.7 m (with a flat roof) is to be constructed at distance d = 60 m beneath the ground, What is the total weight of the ground material the columns must support
A 0.080 T magnetic field is perpendicular to a circular loop of wire with 100 turns and radius 30cm. what is the magnitude of the induced emf
Gracie slides down a frictionless slide of length L that makes an angle (theta) with the ground. (A.) Gracie starts out at rest at the top of the slide.
Two point charges totaling 7.00 µC exert a repulsive force of 0.100 N on one another when separated by 0.719 m. What is the charge on each? smallest charge largest charge (b) What is the charge on each if the force is attractive? smallest charge l..
Some rear view mirrors produce images of cars behind you that are smaller than they would be if the mirror were flat. What is the mirrors radius of curvature if cars 25.0 m away appear 0.33 times their normal size?
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