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Q. The time constant of an RC circuit is 5.5 s. How much time t is required for the capacitor (uncharged initially) to gain one-half of its full equilibrium charge?
Q. A 1.10 m long straight wire section has a resistance R = 34.0 ohm and is connected, with conducting wire of negligible resistance, to a 6.00 V battery. The wire is located in a uniform magnetic field B directed perpendicular to that section of wire. Calculate the magnitude of B when the force on the wire due to B has a magnitude of 0.170 N.
What minimum force is necessary to start the block moving up the wall? (Hint: The static frictional force is now directed down the wall.)
What is current in the coil
What is a stopping distance
In a head-on collision, the car stops in 0.279 from a speed of 16. The driver has a mass of 68, and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fraction of a second.
Find out an angular momentum of the system
Clifford is in a real hurry, however, and skips the speed ramp. Starting from rest with an acceleration of 0.49 m/s2, he covers the same distance as the ramp does, but in one-fourth the time. What is the speed at which belt of the ramp is moving.
Compute average magnetic flux through turn of inner solenoid
A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is originally at rest, then moves at a speed of 0.20 m/s all along the conveyor belt. What is the instantaneous power produced by this machine..
The coefficient of static friction between the 3000 lb car's tires and the road is 0.5. Determine the steepest grade the car can drive up at constant speed if car has (a) rear=wheel drive; (b) front-wheel drive; (c) four wheel drive.
Evaluate the electrostatic energy of two opposite charges
A 362 g object is attached to a spring and executes simple harmonic motion with the period of 0.200 s. If the total energy of the system is 6.71 J.
Heat is extracted from a certain quantity of steam at 100 degrees celsius. Thus the steam changes into ice at 0 degrees celsius. If this energy were used to accelerate the ice from rest, what would be the linear speed of the ice.
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