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A thundercloud similar to the one described in Example 24.3 produces a lightning bolt that strikes a radio tower. If the lightning bolt transfers 3.93 C of charge in about 0.101 ms and the potential remains constant at 67.0 MV, find
a) The average current
b) The average power
c) The total energy
d) the effective resistance of the air during the lightning strike.
A mass m = 4.5 kg hangs on the end of a massless rope L = 2.01 m long. The pendulum is held horizontal and released from rest. What is the magnitude of the tension in the string at the bottom of the path
A piece of string 5.30 m long has a mass of 14 g. What must the tension in the string be to make the wavelength of a 128 Hz wave 120 cm.
A soap film with different thicknesses at different places has an unknown refractive index n and air on both sides. Find the ratio tmagenta/tyellow
You are on a bridge which is a height 30m above the water. You first drop a ball and then 1.5 seconds later throw a second ball down so that both balls hit the water at the same time.
A battery with an emf of 1.50 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 1.40 V, what is the resulting current
A shell is fired from a gun with a muzzle velocity of 25 m/s, at an angle of 60° with the horizontal. How far from the gun does the other fragment land
find the work done to move the particle from x = 0 to x = 10.0 m by graphically determining the area under the F versus x graph. (Do this on paper. Your instructor may ask you to turn in this graph.)
A space station is constructed in the shape of a wheel 25 in diameter, with essentially all of its 5.10×10^5 mass at the rim.
A bat at rest sends out ultrasonic sound waves at 50.5 kHz and receives them returned from an object moving directly away from it at 30.5 m/s
A charge of170µC is at the center of a cube of edge40.0cm. No other charges are nearby. Find the total flux through each face of the cube
Compute the horizontal distance the ball
A hole in an aluminum plate has a diameter of 1.179 at 24.00. What is the diameter of the hole at 199.0
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