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A beam of light travels from a medium with an index of refraction of 1.95 to a medium with an index of refraction of 1.30. If the beam refracts at an angle of 23.5o from the normal, at what angle to the normal did it enter the second medium?
The electric potential energy stored in the capacitor of a defibrillator is 110 J, and the capacitance is 120 ?F. What is the potential difference across the capacitor plates
A 95g ball of clay traveling at speed v0 hits and sticks to a 1.9kg kg block sitting at rest on a frictionless surface. What percentage of the ball's initial energy is "lost"
A projectile is fired with an initial speed of 69.0m/s at an angle of 42.8 degrees above the horizontal on a long flat firing range
A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 4.0 m/s, How long does it take him to catch his opponent
A person pushes a 17.2-kg shopping cart at a constant velocity for a distance of 24.2 m on a flat horizontal surface. Determine the work done by the pushing force
A uniform solid disk with a mass of 28.3 kg and a radius of 0.514 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk, as drawing illustrates.
A bowling ball is released at the upper edge of a ramp that is inclined at an angle of 37o with the floor. Obtain the total kinetic energy of the bowling ball at the bottom of the ramp
Explain how far x can a man who weighs 447 n from the right support which is 1.1 m from the right side of the board before the board tips?
A solenoid is 2.0 m long and with an inner radius of 30 cm and 1000 turns of wire. How large does the current does it carry
The top and bottom margins of a poster are 4 cm and the side margins are each 5 cm. find the dimensions of the poster with the smallest area
a pumpkin is pushed horizontally at a speed of 2.2 m/s off of a desktop that is 0.8 meters above the floor. how far frome the base of the desk
Suppose a 64.0 kg boy and a 48 kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.00 m/s2, find out the magnitude of the acceleration of the boy toward the girl.
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