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To estimate the distance you are from a lightning strike, you can count the number of seconds between seeing the flash and hearing the associated thunderclap. For this purpose, you can consider the speed of light to be infinite (it arrives instantly). Sound travels at about 343 m/s in air at typical surface conditions. How many kilometers away is a lightning strike for every second you count between the flash and the thunder?
The rms current in an RL circuit is 0.32A when it is connected to an ac generator with a frequency of 60Hz and an rms voltage of 25V. Find the rms voltage across the inductor
A 71.9-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a)accelerating upward with an acceleration of 1.92 m/s2,(b) moving upward at a constant speed, and(c) accelerating downward with an acceleration of..
Two square, oppositely charged conducting plates measure 28cm on each side. The plates are close together and parallel to each other. What would be the electrons acceleration
A(n) 150 pF capacitor is connected in series with an unknown capacitor, and as a series combination they are connected to a 23.0 V battery, what is the unknown capacitance
Nichrome wire of cross-sectional radius 0.754 mm is to be used in winding a heating coil. find the length of wire you must use to wind the coil
A student throws a 110 gram snowball at 8 meter per second at the side of the schoolhouse. determine where it hits and sticks
If the current through the inductor (L = 25.1 mH) at 351 Hz has an amplitude of 45 mA, what is the rms value of the AC voltage
Two 10 centimeter diameter charged rings face each other, 30 centimeter apart. Obtain the magnitude of the electric field E, at the midpoint between the two rings
An object with mass m = 1.1 g and charge q is placed at point A, which is 0.05 m above an infinitely large, uniformly charged, nonconducting sheet (? = -5.4 10-5 C/m2), as shown in the figure. Gravity is acting downward (g = 9.81 m/s2). Determine the..
A concave makeup mirror is designed so that a person 23 cm in front of it sees an upright image magnified by a factor of two. What is the radius of curvature of the mirror
A body moving at .500c with respect to an observer disintigratesinto two fragments that move in opposite directions relative to their center of mass along the same line of motion as the original body. What velocities will the observer find
How much energy is needed to melt exactly 1000 aluminum cans, each with a mass of 14.0 g, for recycling? Assume an initial temperature of 26.4 C.
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