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If the electric field strength in air exceeds 3.0 ? 106 N/C, the air becomes a conductor. Using this fact, determine the maximum amount of charge that can be carried by a metal sphere4.9 m in radius.
Light of wavelength 470 nm in air enters a fishbowl filled with water, then exits by the crown-glass wall of the container. Find the wavelengths of the light (a) in the water and (b) in the glass.
A uniform plank of length 6m and weight 211N rests horizontally on two supports, with 1.1 m of the plank hanging over right support. To what distance x can a person who weighs 442N walk on the overhanging part of the plank before it just begins to..
Billy Dee notes that her favorite record rotates at 34 rev/min. At what speed does the point on the record touching the stylus (needle) move when the stylus (needle) is 5.9 cm from the center?
Conclude the magnitude of angular acceleration
A toy train is pushed forward and released at = 2.0 with a speed of 1.5 . It rolls at a steady speed for 2.8 , then one wheel begins to stick. The train comes to a stop 5.6 from the point at which it was released. Elucidate the train's accelera..
What will be its length and height at rest
Find the time it takes for a telephone call to go by way of satellite between these cities. Ignore the curvature of the earth.
A charge of -5 micro-coulombs is placed at x = 0 cm, y = 0 cm. Another charge of -5 micro-coulombs is placed at x = +22 cm, y = -50 cm. When measured counter-clockwise from the x axis, what angle is the electric force vector acting on the charge a..
What are the rocket's horizontal range, greatest height, and total time of flight. The magnitude of the torque of this force on the door with respect to the hinge is most nearly .
A 1500 car travelling at 26 suddenly runs out of gas while approaching the valley that looks like an inverted hump. 12m at the left where the care runs out of gas and 19 m at the right were it is headed. What will be the car's speed as it coasts into..
Legend has it that, many centuries ago, Archimedes jumped out of his bathtub and ran across town naked screaming "Eureka!" after he solved an especially difficult problem.
How much energy is necessary to place three charges, each of 3.0 micro Coulomb's, at the corners of an equilateral triangle of side 2 cm.
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