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Suppose there is a cube made of copper. Initially, it has a net charge of zero. I then place exactly eight additional electrons somewhere on the surface of the cube. Since like charges repel, the electrons will not stay together in one spot on (or in) the cube. How will the electrons arrange themselves? Why will they arrange themselves in that manner?
A thin copper rod 1 m long has a mass of 50 g. What is the minimum current in the rod that would allow it to levitate above the ground in a magnetic field of magnitude 0.100 T.
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.60 m/s at an angle of 18.0° below the horizontal. How far horizontally from the base of the building does the ball strike the ground
One mole of an ideal gas does 2 600 J of work on its surroundings as it expands isothermally to a final pressure of 1.00 atm, Determine the initial volume of the gas
Water is contained in a closed, rigid, 0.25 m3 tank at an initial pressure of 5 bar and a quality of 60%. Heat transfer occurs until the tank contains only saturated vapor. Determine the final mass of vapor in the tank, in kg, and the final pressu..
A small object with a mass of m = 808 g is whirled at the end of a rope in a vertical circle with a radius of r = 128 cm. determine the tension in the rope
Suppose an object is set sliding, with a speed less than escape velocity, on an infinite frictionless plane in contact with the surface of the Earth. Describe its motion.
You push with a 20 N horizontal force on a 2 kg mass resting on a horizontal suface against a horizonatal friction forces of 12N. What is the accerlation.
A hot dog cooker heats hot dogs by connecting them to 120 V household electricity. A typical hot dog has a mass of 50g and a resistance of 130ohm . How long will it take for the cooker to raise the temperature of the hot dog from 20c to 80c ? The ..
A 1.6kg , 20-cm-diameter turntable rotates at 50rpm on frictionless bearings. What is the turntable's angular velocity, in rpm, just after this event
What is the Hall effect, give a real life example, list its applications, When an electric light bulb is operated on a low frequency AC, they noticeably flicker
A bottle has a mass of 28.60g when empty and 92.15gwhen filled with water. What is the specific gravity of this other fluid
A proton is accelerated from rest through a potential difference of 350MV, What's the ratio of kinetic to rest energy
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