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1. Suppose you wanted to store 27 ?C of charge in a capacitor across a voltage of 120 V. What capacitance is needed in nF?
2. You are given a parallel plate capacitor that has plates of area 4.00 m2 which are separated by 0.0100 mm of nylon (dielectric constant ? = 3.4). You are told to assume that this capacitor stores 0.170 C of charge. Calculate what the applied voltage in kV should be for this capacitor.
Initially stationary (the train starts at rest), a train has a constant acceleration of 0.6 m/s2, What is its speed after 21 s
290 Kg piano slides 4.0 m down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is .40.
Evaluate (a) the acceleration of each object, (b) the tension in the string, and (c) the coefficient of kinetic friction between m2 and the incline.
Objective questions based on kinematics.
A 700 N car traveling at 25m/s.The breaks are applied suddenly and the car slides to a stop. The average breaking force between the tires and the road is 7100 N.How far will the car slide once the breaks are applied.
The average density of the planet Mercury is 5510 kg/m3. The acceleration of gravity on its surface is 3.73 m/s2. Calculate the average radius of Mercury
Sam heaves a shot with weight 16-lb straight upward, giving it a constant upward acceleration from rest of 45.5m/s2 for a height 63.0cm, What is the speed of the shot when he releases it
Three stars, each with the mass and radius of our sun, form the equilateral triangle 5.0×109 {rm m} on a side. If all three are simultaneously released from rest, what are their speeds as they crash together in the center.
A rigid, well insulated container contains 10 kg of water. A motor connected to a paddle wheel is used to stir the water at a rate of 100 rad/s. How much toque does the motor need to supply (in N-m) in order for the water to heat up by 10?C in one..
A 1200 N uniform boom is supported by a cable perpendicular to the boom, as in Figure P8.28. The boom is hinged at the bottom, and a 2000 N weight hangs from its top. Find out the tension in the supporting cable and the components of the reaction ..
A basketball star covers 2.6 m horizontally in a jump to dunk the ball. His motion through space can be modelled precisely as that of a particle at his center of mass. His center of mass is at elevation 1.02m when he leaves the floor. It reaches a..
How far would trampoline stretch if the performer stands still on it while taking a bow.
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