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A ray of light is incident on the outer glass wall of an aquarium which have a refractive index of 1.51. If the reflected portion of the light is completely polarized at what angle to the normal does the ray enter the water?
[n(air)=1.0, n(water)=1.33]
a rock is thrown from edge of a cliff to 23.5 meters below, initial velocity 12.5 m/s directed at 44.5 degrees above horizontal. how long does it take for the rock to reach the ground
In the x-y plane, a charge of -4.6uC is on the x-axis at the point (-30cm,0) and a second charge of +7.2uC, Calculate the magnitude and direction of the Electric Force Fe
You close the top of your straw with your thumb and lift the straw out of your glass containing Coke. How large is the error (in per cent) if you neglect the air in the straw
Two blocks connected by a cord passing over a small, frictionless pulley rest on frictionless planes. (m1 = 101 kg, and m2 = 45 kg. What is the magnitude of the accelerartion of the blocks
A cannonball is dropped from the top of a building. If the point of release is 44.8 m above the ground, what is the speed of the cannonball
Suppose you decide to travel to a star 85 light-years away at a speed that tells you the distance is only 10 light-years
A wire carries current to the north (towards the top of the computer screen) through a magnetic field. what is the direction of the magnetic force on the current-carrying wire
An archer shoots an arrow with a velocity of 46.0 m/s at an angle of 45.5° with the horizontal. What is the initial speed of the apple
A rope is used to pull a 2.72 kg block at constant speed 6.90 m along a horizontal floor. What are the work done by the ropes force
What is the resistance of the wire in the blanket? Express your answer to two significant figures and include the appropriate units. How much current does the wire carry
a muon with half-life 1.52 micro secondsin its own frame travels 60 km. what is that distance in the frame of the muon
The distance between two telephone poles is d = 52.0 m. How much tension does the bird produce in the wire
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