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A 4.00-microF capacitor that is initially uncharged is connected in series with a 7.90-k ohm resistor and an emf source with E = 120 V and negligible internal resistance.
(a) Just after the circuit is completed, what is the voltage drop across the capacitor?
(b) Just after the circuit is completed, what is the voltage drop across the resistor?
(c) Just after the circuit is completed, what is the charge on the capacitor?
(d) Just after the circuit is completed, what is the current through the resistor?
A hypodermic syringe has a piston area of 0.5 cm^2 and a needle with circular opening of diameter 0.2 mm. What is the gauge pressure in the syringe while pushing the piston with 1 N of force
A size-5 soccer ball of diameter 22.6cm and mass 426g rolls up a hill without slipping, reaching a maximum height of 5.00m above the base of the hill. How much rotational kinetic energy did it then have
A boy of mass 50 kg runs up a hill of vertical height 300 m in 20 minutes. calculate the work he does climbing the hill
A helicopter is ascending vertically with a speed of 5.02m/s. At a height of 140m above the Earth, a package is dropped from the window. How much time does it take for the package to reach ground.
A 13.5?F capacitor is connected to a power supply that keeps a constant potential difference of 26.0V across the plates. By how much did the energy change during the insertion
A laser pulse has an energy of 16 J and a beam radius of 2 mm. The pulse duration is 13 ns and the energy density is constant within the pulse. What is the total energy density within the pulse
Two cars leave a stoplight, one 0.5128 s before the other. The second car accelerates with twice the acceleration of the first. What is the ratio of their speeds at that instant
What is the distance, measured along the screen, between this bright fringe and bright fringe corresponding to m = 3.
A force of 70.0 N is exerted at an angle of 30.0 below the horizontal on a block of mass 8.00 kg that is resting on a table
A certain fuel-efficient hybrid car gets gasoline mileage of 55.0 mpg (miles per gallon). If you are driving this car in Europe and want to compare its mileage with that of other European cars, express this mileage in km/l (liter).
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 940 m/s2 What is the magnitude of the net force acting on the soccer ball at this instant
Two charges charges of -2.1 micro-coulombs and a charge of +2.1 micro-coulombs are placed on the corners of an equilateral triangle where the length of a side is 44 cm as shown in the sketch below. What is the magnitude of the total electric field..
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