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Calculate the average force a bumper would have to exert to bring a 1200-kg car to rest in 15 cm when the car had an initial speed of 2.0 m/s (about 4.5 mph).
An equipotential line surrounds a charge distribution of known value (35 mC). Two points A and B are selected on this equipotential line separated by 3.0 cm. What is the potential difference DV between these points
A block of glass with flat sides is surrounded by air. A ray of light traveling in the glass is incident on the flat interface with air at the top surface of the block of glass, What is the refractive index of the glass
A ball is thrown horizontally from a building. What happen to the horizontal and vertical accelerations? (Ignore the effects of air resistance) Will the ball accelerate in the vertical direction, however not the horizontal direction?
Imagine that you are at the equator and the air is motion less every where. How fast will aparcel of air be moving after 1 h
An ideal gas is compressed from a volume of 400 cm^3 to a volume of 150 cm^3 slowly and isothermally in a piston-cylinder system. If the final pressure is 100 kPa, determine a) the work done on the gas and b) the heat transfer (specify whether the..
A boy on a hill shoots an arrow at 20m/s directed at 36.9 degreesabove the horizontal. The arrow hits a target 3.00 seconds afterrelease. Find The horizontal distance from the release point to the target
you are given a 120 V battery;a hairdryer designed to workproperly at 120 V, where it's rated at 1,200 W; and a mixer designed to work properly at 60 V, where its rated at 120 W. Youalso happen to have a large supply of 60 Ω resistors.
A 4.5- kg box of books is pulled up a 3.66- m-long inclined plank to a height of 1.4 m. What percent of the work is lost to friction
A man swings froma rope on the top of a building that is30 meters high. He is standing at 10 meters high. what is his velocity at the bottom of his swing
Bats are capable of navigating using the earth's field-a plus for an animal that may fly great distances from its roost at night. If, as sleeping during the day, bats are exposed to a field of a equal magnitude but different direction than the earth..
White light passes from quartz to air, with an incident angle of 31.7°. Discover the angle among the colors blue (470 nm) and violet (410 nm).
A capacitor is constructed of two concentric conducting cylindrical shells. The radius of the outer shell is 2.59x10^-3 m, and that the inner cylindrical shell is 2.45 x10^-3 m. When the cylinders carry equal and opposite charges of magnitude 1.54x10..
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