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A pulse of light in air is incident on a medium with an indcident angle of 34 degrees. The velocity of light in the medium is 0.5 that of the speed of light. Find the refracted angle of the light in degrees.
You stand in the earth's magnetic field, directly facing its horizontal component (in other words, facing magnetic south). The field has a magnitude of 0.550 gauss and is directed 55.2° below the horizontal. Calculate the inward magnetic flux throu..
a spring is hanging vertically from a ceiling. assume the springs mass is negligible. i hang a 0.5kg mass on the spring
A 1.5 kg toy motorcycle is moving on the inside of a vertical circular track (r=1.0m). It arrives at the top of the track with a speed of 5.0m/s. What force does the track exert on the motorcycle?
A potter's wheel is a uniform solid disk of diameter 0.72m and a mass of 60kg. what minimum total friction force must the potter supply to the disk if her hands are acting at the edge of the disk
A factory worker pushes a 31.4kg crate a distance of 4.35m along a level floor at constant velocity by pushing downward at an angle of 30.3 degrees below the horizontal. What is the total work done on the crate
A gauge-12 wire has diameter centimeters and length meters. while the voltage volts is applied to the ends of the wire, the current is amperes. The concentration of free electrons in the wire is per cubic meter.
Suppose the ray, in air with n = 1.00, enters a slab with n = 2.37 at a 37.4° angle with respect to the normal, At what angle to the normal does the ray leave the slab
An airplane flying at a constant speed of 160 m/s pulls out ofa dive in a circular arc. What is the radius of the arc
One of the fastest recorded pitches in major-league baseball, thrown by Tim Lincecum in 2009, how far would the ball fall vertically by the time it reached home plate, 60.5 ft away
A train is moving slowly eastward at 4m/s. A child in the train has sent his robot walking at 1.2 m/s from the left side to the right side of the train, How long does it take the robot to move across the train
A block of mass 4.25 kg hanging from a light string is struck by a projectile of mass 250 g. The projectile sticks to the mass after collision and the two together rises a vertical distance of 12 cm. What is the velocity of the two-mass system immedi..
Two ice skaters, Daniel (mass 60.0kg ) and Rebecca (mass 45.0kg ), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, What is the magnitude of Daniel's velocity after the collision
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