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Suppose unpolarized light of intensity 150 W/m^2 falls on the polarizer and the angle is 30 degrees. What is the light intensity reaching the photocell?
if the pressure of the 3.0-cm3 volume is reduced to 1.0 x 10-11 pa an extremely good vacuum while the temperature
Scientists in a laboratory produce a sound wave in a simulated environment (air) with a velocity of 476 m/s
A point charge is accelerated from rest through a potential difference of 150 V and gains a speed v initial. What speed (in terms of v initial ) would it gain if it were accelerated through 280 V instead
In 1980, over San Francisco Bay, a large yo-yo was released from a crane. Suppose the yo-yo was 135 kg, What was the tension in the cord on which it rolled
A person tuning a piano plays a note and hits a tuning fork atthe same time. The fork plays a note of 288 Hz. If 3 beats areheard when the fork is struck, what possible frequenices is the piano playing?
a charge of 7 nc is uniformly distributed around a ring of radius 10 cm that has its center at the origin and its axis
A 30.0 g ball rolls around a 50.0 cm-diameter L-shaped track, shown in the figure,at 50.0 rpm. What is the magnitude of the net forcethat the track exerts on the ball
A 35 N boy pushes down on the ground with a force of 10 N perpendicular to the surface of the ground. What is the magnitude of the force of the ground on the boy
At a certain location, the Earth's magnetic field has a magnitude of 5.8×10^-5, Find the magnitude of the magnetic flux through the top of a desk at this location that measures 140cm by 77cm
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.20 10-10 T. How much energy does this wave carry through the window during a 65-s phone call
A ford focus has a wheelbase of 274cm. Upon weighing, it is found that the front wheels have a weight of 7000 N, What is the weight of the vehicle
Assume the acrylic D-shaped lens, What is the critcal angle of the d-shaped lens while it is in water
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