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A spherical conductor of radius 12 cm has a charge of 1.6 x 10-7C distributed uniformly on its surface. What is the electric field
(a) Inside the sphere
(b) Just outside the sphere
(c) At a point 18 cm from the centre of the sphere?
An object has a total energy of 5.0 x 10^15 J and a kinetic energy of 2.0 x 10^15 J. What is the magnitude of the object's relativistic momentum
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 1.61 km. What is the direction of the couples displacement
what is the ball's speed immediately after the collision?
A crane at a construction site lifts a concrete block with a mass of 440 kg from the ground to the top of a building with a height of 15.0 m, If the duration of the lift was 3.00 minutes, then what was the average power performed by the crane
The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.800, and the log has an acceleration of 0.800 m/s2. Find out the tension in the rope.
An electric motor turns a flywheel through a drive belt that joins a pulley on the motor and a pulley that is rigidly attached to the flywheel as shown in the figure below. The flywheel is a solid disk with a mass of 70.5 kg and a radius R = 0.625..
Suppose that the amount of heat removed when 2.8 kg of water freezes at 0.0 oC were removed from ethyl alcohol at its freezing/melting point of -114.4 oC. How many kilograms of ethyl alcohol would freeze
At a recent rock concert, a dB meter registered 130 dB when placed 1.50 m in front of a loudspeaker on the stage. What was the power output of the speaker
A thin layer of ice floats on the surface of water in a bucket. A ray of light from the bottom of the bucket travels upward through the water. What is this angle after the ice melts
q1. in a head-on collision a car stops in 0.24 from a speed of 25. the driver has a mass of 74 and is fortunately
A parallel-plate capacitor has capacitance 6.50 µF. How much energy is stored in the capacitor if it is connected to a 12.00 V battery?
200 mL of water at 20.0 C is placed in the freezer compartment of a refrigerator with a coefficient of performance of 4.00. How much heat energy is exhausted into the room
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