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The rain-soaked shoes of a person may explode if ground current from nearby lightning vaporizes the water. The sudden conversion of water to water vapor causes a dramatic expansion that can rip apart shoes. Water has density 1000 kg/m3 and requires 2256 kJ/kg to be vaporized. If horizontal current lasts 2.00 millisecond and encounters water with resistivity 145 ohm•m, length 12.0 centimeter, and vertical cross sectional area 1.5 x 10-4m2, Find what average current is required to vaporize the water?
A technician wraps wire around a tube of length 33 cm having a diameter of 8.1 cm. If the current in this solenoid increases at the rate of 5 A/s, what is the self-induced emf in the solenoid
1 two equally charged spheres of mass 0.001kg are placed 0.02m apart. what is the eletrictric repulsive force that they
A circular loop of flexible iron wire has an initial circumference of 169cm, but its circumference starts to decrease at a constant rate of 10.0cm/s due to a tangential pull on the wire. What is the direction of the induced current in the loop
A long sighted person can only see clearly objects further than 1.2 m away.They wish to read a book held 30 cm away. Calculate the power (in diopters) of the lens in thier corrective spectacles:
A 42.5 mA current is carried by a uniformly wound air-core solenoid with 425 turns, a 19.5 mm diameter, and 13.0 cm length. Compute the inductance of the solenoid
A body of rest mass m0, travelling initially at a speed 0.6c. makes a completely inelastic collision with an identical body initially at rest, (a) What is the speed of the resulting single body? (b) What is its rest mass?
A converging lens (f1 = 24.0 cm) is located 56.0 cm to the left of a diverging lens (f2 = -28.0 cm). An object is placed to the left of the converging lens, and the final image produced by the two-lens combination lies 19.8 cm to the left of the d..
A jogger on a circular track that has a radius of 0.250 km runs adistance of 1.00 km. What angular distance does the jogger cover in radians
A football player who weighs 85 kg is carrying the ball directly up field at a rate of 15 km/hr. What is the initial momentum of the offensive player
scenarioa building has a single elevator at the atrium serving 4 floors.someone on the first ground floor who wants to
An isolated conductor of arbitrary shape has a net charge of 6.0 uC. Inside the conductor is a cavity within which is a point charge 66.5 uC, What is the charge on the outer surface of the conductor
The Golden Gate Bridge in San Francisco has a main span of length 1.28 km, one of the longest in the world. Imagine that a steel wire with this length and a cross-sectional area of 3.40 10-6 m2 is laid in a straight line on the bridge deck with it..
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