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1. What is skin effect? Discuss skin depth, giving some numerical values.
2. Why are low-frequency waves more suitable than high-frequency waves for communication with underwater objects?
3. Discuss the consequence of the low intrinsic impedance of a good conductor as compared to that of a dielectric medium having the same P and m.
4. Why can there be no fields inside a perfect conductor?
a diver running 2.3ms drives out horizontally from the edge of a vertical cliff and 3.1rm s later reaches the water
When Skylab reentered the Earth's atmosphere on July 11, 1979,it broke into a myraid of pieces. What was the kinetic energy of the film vault when it landed
A person travels in a car with a speed of 90 m/s. To get the driver's attention, a stationary police officer behind the car shines his spotlight at the car. If the officer is 270 m behind the car when he turns on his spotlight, how long does it take ..
Two circuits contain an emf produced by a moving metal rod, likethat shown in the drawing. The speed of the rod is the same in eachcircuit, but the bulb in circuit 1 has one-half the resistance of the bulb in circuit 2.
a 0.145-kg baseball pitched at 37.0 ms is hit on a horizontal line drive straight back toward the pitcher at 50.5 ms .
A pipeline is currently being constructed to deliver natural gas produced from the Haynesville shell deposit in Northwest Louisiana to Donaldsonville, LA. How many cubic feet of gas will the line hold
How long does it take Scooby to accelerate to his top speed and how far has he traveled and how long does it take the Phantosaur to accelerate to his top speed and how far does it travel?
An object is placed to the left of a lens, and a real image is formed to the right of the lens. How far from the lens is the object
A pipe, which has a cross sectional area A, is bent at a 90 deg angle. Liquid with density ρ is flowing along this pipe with velocity v. Find with which force does the liquid act on the pipe
An isolated capacitor of unknown capacitance has been charged to a potential difference of 100V. Calculate the unknown capacitance
A sled of mass 50.0 kilogram is pulled along flat, snow-covered ground. The static friction coefficient is 0.30, and the kinetic friction coefficient is 0.10. Determine what does the sled weigh
An ideal gas has a density of 1.78kg/m^3 is contained in avolume of 44.8*10^-3 m^3. The temperature of the gas is 273K. What is the root mean velocity of the molecules
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