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Two 10-cm-diameter charged rings face each other, 22 cm apart. The left ring is charged to -24 nC and the right ring is charged to +24 nC .
A) What is the magnitude of the electric field E? at the midpoint between the two rings?
B) What is the magnitude of the force F? on a -1.0 nC charge placed at the midpoint?
The potential difference between the accelerating plates of a TV set is about 25 kV. find the magnitude of the uniform electric field in the region between the plates
A car of mass 1330 kg is traveling at 28.0m/s. Calculate the retarding force acting on the car
A cannon fires a cannonball from ground level at an angle of 18 degrees above the horizontal, at what angle should the cannon be fired so that the cannonball travels twice as far
An elvator can carry a max load of 1600kg is moving up with a constant speed of 2 m/s. The frictional force opposing the motion is 3320N. Determine the max power delivered by the motor to the elvator in HP.
A particle of mass 9.82 g and charge 67.7 μC moves during a uniform magnetic field, in a region where the free-fall acceleration is -9.8 m/s2 without falling. The velocity of the particle is a constant 18.3 km/s, which is perpendicular to the magnet..
A rocket is fired at a speed of 82.0 m/s from ground level, at an angle of 31.0 ° above the horizontal. find By how much does the rocket clear the top of the wall
Calculate the gravitational potential energy U of this system. Take the potential energy to be zero when the two objects are far apart. Use Fx=-dU/dx to find the magnitude and direction of the force on the particle.
a 72 kg block is hanging in the air suspended by a rope, tied up and over a frictionless pully, to a second block of unkown mass. calculate the mass of the block on top of the cliff
find an expression for the allowed wavelengths of debroglie waves that fit in a box of length l. what kinetic energies
Knowing the sign of the work done on an object is a crucial element to understanding work. Positive work indicates that an object has been acted on by a force that tranfers energy to the object, thereby increasing the object's energy. Negative wor..
An airplane black box contains a bunch of unknown resistances and sources of emfs connected in unknown way such that (1) a 9 Ohm resistor across the terminals of the circuit box draws 0.80 A, and (2) an 17 Ohm resistor draws 0.50 A. What resistance w..
A hole of radius r has been drilled in a flat, circular plate of radius R. Determine the moment of inertia for rotation about an axis through the centre of the plate
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