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A plate carries a charge of -2 ?C, while a rod carries a charge of 3.50 ?C. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge?
Find the direction of the net electrical force electrons will exert on the proton. Enter your answer as an angle measured relative to the line connecting the proton and the right electron with counterclockwise being positive.
A ring 1.90m in diameter is pivoted at one point on its circumference so that it is free to rotate about a horizontal axis. what is its maximum angular velocity
A bathysphere used for deep-sea exploration has a radius of 1.50 m and a mass of 1.19 104 kg. In order to dive, this submarine takes on mass in the form of sea water.
An 80.0-m-long brass rod is struck at one end. A person at the other end hears two sounds as a result of two longitudinal waves, What is the time interval between the two sounds
In a certain oscillating LC circuit the total energy is converted from electric energy in the capacitor to magnetic energy in the inductor in 1.30 µs. What is the frequency of oscillation
A .430 kg block of wood hangs from the ceiling by a string, and a 7.10 x 10^-2 kg wad of putty is thrown straight upward, How high does the putty-block system rise above the original position of the block
An engraver uses a magnifying glass (f = 8.80 cm) to examine some work, as in the drawing. What is the distance between the work and the magnifying glass
In 0.181s, through a distance of 8.05 m, a test pilot's speed decreases from 88.9m/s to 0m/s. If the pilot's mass is 70 kg, how much work is done against his body.
The electric potential energy stored in the capacitor of a defibrillator is 68 J, What is the potential difference across the capacitor plates
Two sound sources radiating in phase at a frequency of 560 Hz interfere such that maxima are heard at angles of 0 and 25° from a line perpendicular to that joining the two sources. Find out the separation between the two sources. (Wave velocity of..
A 100 kg sphere and a 100 g sphere outside it are held fixed with the distance between their centers equal to 0.5 m, What are the magnitude and direction of the force on each of the spheres
A block of weight 36.1 N is hanging from a rope. The tension in the rope is 48.5 N, pulling upward on the block. What is the magnitude and direction of the acceleration of the block?
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