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A copper wire has diameter 0.140mm and length 11.0cm . It's in a horizontal plane and carries a current of 2.50A . The density of copper is 8920 kg/m3.
A. Find the magnitude of the magnetic field needed to suspend the wire against gravity.
B. Find the direction of the magnetic field needed to suspend the wire against gravity. Assume the current points east.
Then the driver sees a red light up ahead at next intersection, and starts slowing down at the constant rate. The car stops at the red light, 180 {rm m} from where it was at t = 0.
A vessel whose walls are thermally insulated contains 2.00 of water and 0.550 of ice, all at a temperature of 0.0. The outlet of a tube leading from a boiler in which water is boiling at atmospheric pressure is inserted into the water.
An elevator accelerates upward at 1 m/s2. When the elevator is moving upward at 2 m/s, a bolt drops from the ceiling which is 2.5 m above the?
A solenoid 10.0 cm in diameter and 75.4 cm long is made from copper wire of diameter 0.100 cm, What power must be delivered to the solenoid if it is to produce a field of 7.60 mT at its center
An electron is accelerated horizontally from rest in a television picture tube by a potential difference of 5500V. It then passes between two horizontal plates 6.5cm long and 1.3 cm apart that have a potential difference of 250V. At what angle wil..
The pilot of the spaceship measures the length of the moving ship as 30 meters. Establish its length as measured by a person on earth.
A brick is thrown upward from the top of a building at an angle of 45° to the horizontal and with an initial speed of 10 m/s. If the brick is in flight for 2.8 s, how tall is the building.
A bale of hay sits on the bed of a trailer. The trailer is starting to accelerate forward, and the bale is slipping toward the back of trailer. What would a force diagram and a free-body diagram look like for the above situation.
Unpolarized light is incident on a series of two Polaroid sheets. The intensity of the light emerging from the second sheet is 18.4 percent of the intensity of the light incident on the first sheet. Find out the angle between the transmissions axe..
A parallel-plate air capacitor is made from two plates 0.070 square, spaced 9.3 apart. What must the potential difference between plates be to produce an energy density of.
How far downstream will you be carried. The water in a river flows uniformly at the constant speed of 2.03 m/s between parallel banks 87.7 m apart.
Perpetual motion machines have fascinated people especially inventors for hundreds of years before the laws of thermodynamics became known. Ideally, once energy is added to start a perpetual motion in machine, the machine would continue to operate..
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