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An 18-gauge copper wire (diameter 1.02 mm) carries a current with a current density of 1.60×106A/m2. Copper has 8.5×1028 free electrons per cubic meter.
A. Calculate the current in the wire.
B. Calculate the drift velocity of electrons in the wire.
Two 2.7cm -diameter disks face each other, 2.7mm apart. They are charged to ±14nC. What is the electric field strength between the disks
An isolated conductor has a net charge of +7.90*10^- 6 C and a cavity with a particle of charge q = +2.30*10^-6 C, find the charge on the cavity wall and outer surface
A proton moves at 4.9x106 m/s in a magnetic field where B = 0.42 T. what force does the proton experience
If you were to send a beam of laser light to a space station above an atmosphere and just above the horizon, would you aim the laser above, below or at the visible space station.
The nucleus of an atom consists of protons and neutrons (no electrons). A nucleus of a carbon-12 isotope contains six protons and six neutrons.
A second skater initially at rest with a mass of 58.4 kg catches the snowball. What is the velocity of the second skater after catching the snowball in a perfectly inelastic collision
Harold the Hurler is a physics student who is renowned for his baseball pitching arm. How much work does Harold perform on the baseball
Your eye (diameter 2.5 cm) is able to focus the image of a tree on your retina. find the size of the image of the tree on your retina
If the car was in neutral and its brakes were off, so that the collision is approximately elastic, find out the final speed of the truck.
A stunt man whose mass is 70 kg swings from the end of a 3.10 m long rope along the arc of a vertical circle. Assume that he starts from rest when the rope is horizontal; find the tensions in the rope that are necessary to make him follow his circ..
Two particles are created in a high-energy accelerator and move off in opposite directions. What is the speed of the second particle, as measured in the laboratory
On a hot summer day in the state of Washington while kayaking, I saw several swimmers jump from a railroad bridge into the Snohomish River below. The swimmers stepped off the bridge, and I estimated that they hit the water 1 s later.
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