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A parallel-plate capacitor is charged to a potentialdifference of 12 V. The area on each plate is 20 cm2 and the spacing between plates is 0.15 mm. Find thef ollowing:
1. the electric field between the two plates
2. the total charge on each plate
3. the electric work done on an electron moving from thenegatively charged plate to the positively charged plate.
The x-component of the electric field
Convex mirrors are used to monitor the aisles in a store. The radius of curvature is 4.0 m. Is the image real or virtual
A sanding disk with rotational inertia I is attached to an electric drill whose motor delivers a torque of magnitude? about the central axis of the disk. what is the magnitude of the angular momentum
A spring-loaded toy gun is used to shoot a ball of mass straight up in the air, Find v_m the muzzle velocity of the ball
copper has 8.5 x 10^28 electrons per cubic meter. if a current of 1.55 A is flowing in the wire, what is the average drift speed of the electrons along the wire
Big Ben, the Parliament tower clock in London, has an hour hand 2.70 m long with a mass of 300 kg, Calculate the total rotational kinetic energy of the two hands about the axis of rotation
You stand in the earth's magnetic field, directly facing its horizontal component (in other words, facing magnetic south). What is the net inward magnetic flux through your body's entire surface
An unknown substance has a mass of 0.125 kg and an initial temperature of 80.0°C. calculate the specific heat of the unknown substance
question1a bank robber travelling at 75 mihr in an escape car suddenly sees a barricade 150 meters ahead. the robber
A 7.0-mm diameter hole is 1.0m m below the surface of a 2.0m diameter tank of water. What is the rate, in mm/min, at which the water level will initially drop if the water is not replenished
According to the definition of work, the work done by an external force in moving a heavy crate along a horizontal surface should be the same whether the force is pulling upward at a 45 degree angle or pushing downward at a 45 degree angle. In practi..
a 20 kg mass sits on an inclined plane with friction making an angle of 50 degrees with respect to the horizontal. calculate the frictional force required to keep the mass from sliding down the incline
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