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A metal ball with a mass of 3.77·10^-6 kg and a charge of +4.79 mC has a kinetic energy of 6.21·10^8 J. It is traveling directly at an infinite plane of charge with a charge distribution of +4.05 C/m^2. If it is currently 1.39 m away from the plane of charge, how close will it come to the plane before stopping? Please note that the ball is 1.39 away.
A 6-kg bucket of water is being pulled straight up by a string at a constant speed. What is the tension in the rope
A square plate of copper with 47.0 cm sides has no net charge and is placed in a region of uniform electric field of 79.0 kN/C directed perpendicularly to the plate. (a) Find the charge density of each face of the plate. (b) Find the total charge ..
Expalin by how much does the potential energy of a 18.0-kg child increase when the child climbs a normal staircase to the second floor?
Two long bar magnets lying on a table with their south poles facing each other exert a force of 12 N on each other. what is the new value of this force
A commercial airliner is undergoing its initial ascent while the pilot maintains a cabin environment of T = 23 C, r = 0.35, and p = 880 hPa. At the 670 hPa level an exit door ruptures and cabin pressure rapidly decompresses. Will clouds form in the c..
Two resistanceless rails 32 cm apart rest on a 6.0° ramp. They are joined at the bottom by a 0.63 resistor, What is the terminal (steady) velocity of the bar as it slides frictionlessly down the rails
An electric heater carries a current of17.5A when operating at a voltage of 120 V. What is the resistance of the heater?
Two 95.0W (120 V) lightbulbs are wired in series, then the combination is connected to a 120V supply. How much power is dissipated by each bulb
An AC generator is to have a maximum output of 346 V. Each coil has an area of 0.149 m2 and a resistance of 16.6 %u03A9, Find the maximum current induced in the coil
In an electron microscope, there is an electron gun that contains two charged metallic plates 2.65 cm apart. Determine the time interval the electron spends between the plates
A proton is traveling horizontally at 5.4 × 106 m/s south. A magnetic flux density has a magnitude of 0.25 T and is directed north. What is the force on the proton
Frank and Mary are twins, and Mary wants to travel to our nearest star system, Alpha Centauri (4.30 lightyears away). How old will Frank be when she returns
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