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A nonconducting spherical shell, with an inner radius of 4 cm and an outer radius of 6 cm, has charge spread nonuniformly through its volume between its inner and outer surfaces. The volume charge density ? is the charge per unit volume, with the unit coulomb per cubic meter. For this shell ? = b/r where r is the distance in meters from the center of the shell and b = 3 ? C/m2. What is the net charge in the shell? C
Two toy cars resting on a frictionless table top are separated by a spring compressed by tying it with a thread. wht is the mass of the car moving to the left
A curling stone slides on ice with a speed of 2.0 m/s and collides inelastically with an identical,stationary curling stone. What fraction of the initial energy is lost in this collision
A high-speed lifting mechanism supports a 880-kg object with a steel cable that is 39.0 m long and 4.00 cm2 in cross-sectional area. Determine the elongation of the cable
A 100-W resistance heater is connected to a 110-V doc source. What current flows through the heater
Starting from rest, a 1.8 10-4-kg flea springs straight upward. While the flea is pushing off from the ground, What is the flea's speed when it leaves the ground
A 2.8 V battery is connected to a small light bulb with a resistance of 2.2 ohms. What is the current in the bulb
Calculate the force needed to stop the downward motion of a jogger's leg, if his leg has a mass of 12.0 kg, a speed of 6.00 m/s
The total charge that an automobile battery can supply without being recharged is given in terms of Ampere-hours. If each of the two headlights draws 1.7 A , find out the time before your battery is "dead"
An inductor in the form of a solenoid contains 410 turns and is 12.8 cm in length. A uniform rate of decrease of current through the inductor of 0.421 A/s induces an emf of 175 µV. What is the radius of the solenoid? In mm
A 8.41 kg crate slides on a horizontal surface. The coefficient of kinetic friction between the surface and the crate is 0.496. what is the magnitude of the external force acting on the crate
A car (m = 2,000 kg) has an initial speed of 40 m/s and the driver applies the brakes over a distance of 200 meters until the car comes to a stop
A 7 kg bowling ball moving at 15 m/s hits a 1 kg pin at rest. The ball leaves at a 10 degree angle at 13 m/s. Calculate the angle and velocity of the pin immediately after the collision
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