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Charge is uniformly distributed around a ring of radius R and the resulting electric field is measured along the ring's central axis (perpendicular to the plane of the ring). At what distance from the ring's center is E maximum? State your answer in terms of R.
Compute the rms speed of a nitrogen molecule at 16.0 °C. At what temperature will the rms speed be half that value
When certain light rays pass from a vacuum into a block of an unknown material, What is the speed of light inside the block
The nucleus of a hydrogen atom is a single proton. The radius of a proton is approximately 1 fm (1 multiplied by 10âˆ'15 m). What is the approximate volume of a proton
The potential difference across the filament of a lamp is maintained at a constant level while equilibrium temperature is being reached. It is observed that the steady-state current in thelamp is only one-ninth of the currentdrawn by the lamp when..
Two canal workers pull a barge along the narrow waterway at a constant speed. One worker pulls with a force of 105 N at an angle of 28 degrees with respect to the forward motion of the barge, What is the magnitude of the force on the barge from the..
The bullet strikes a block of wood and penetrates to a depth of 15 cm. What resistive force (assumed to be constant) does the wood exert on the bullet? Explain how long does it take the bullet to come to rest?
Your favorite physics book (total mass 2.4kg) is pushed across the floor at a constant speed by a force of F = 26N at an angle (theta)= - 42 degrees (aiming downward 42 degrees below the horizontal). Determine the coefficient of kinetic friction ? k ..
A block of wood, with density 780 kg/m3 has a cubic shape with sides .0330 m long. What is the mass of the lead
A ball is thrown upward from a platform 4.6 m high with a speed of 16 m/s, What is the magnitude of its velocity when it hits the ground
An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is S = 1.27 109 W/m2. What is the rms value of each of the following fields in the electromagnetic wave emitted by the laser? (a) the electric ..
The giant swing at a country fair consists of a vertical central shaft with a number of horizontal arms attached at its upper end. Find the time of one revolution of the swing if the rod supporting the seat makes an angle of 30 degrees with the vert..
A stone is dropped at t = 0. A second stone, with 6 times the mass of the first, is dropped from the same point at t = 160 ms. (a) How far below the release point is the center of mass of the two stones at t = 300 ms? (Neither stone has yet reached t..
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