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1. Discuss the consequence of the frequency dependence of the phase velocity of a wave in a material medium.
2. What is loss tangent? Discuss its significance.
3. What is the intrinsic impedance of a material medium? What is the consequence of its complex nature?
4. How do you account for the attenuation undergone by the wave in a material medium?
5. What is the power dissipation density in a medium characterized by nonzero conductivity?
6. What are the stored energy densities associated with electric and magnetic fields in a material medium?
a transformer has N^1 =350 turns and N^2 =2000 turns. If the input voltage is 170V, what voltage is developed across the secondary coil?
A respiration monitor has a flexible loop of copper wire, which wraps about the chest. what is the average current in the loop
A 932 kg rocket is motionless in space. To start moving, its main engine is fired for 7 s, during which time it ejects exhaust gases at 1205 m/s. What is the approximate mass of ejected gas
An ocean thermal-energy power plant takes in warm surface water at a temperature of 26oC, What is the maximum possible efficiency of this power plant
A series RCL circuit driven at angular frequency w = 780 rad/s has a capacitive reactance XC = 920 ohms, What is the average power consumption of the circuit
The average atmostpheric pressure Po on the surface of Mars is 6.0hPa. The radius of the planet is r = 3400 km. The acceleration dueto gravity is 3.7m/s^2. Compute the total mass M of the Martianatmosphere. Express M is Kg
When monochromatic light shines vertically on a soap film(n = 1.33) with air on each side, the second smallest nonzero film thickness for which destructive interference of reflected light is observed is 326 nm. What is the vacuum wavelength of the li..
A spring with spring constant 14 hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 3.0 and released. The ball makes 17 oscillations in 16 seconds. What is it the mass of ball.
what is the new force between the objects. if Andromeda contains roughly the same number of stars and attracts the Milky Way with a gravitational force of 2.4*10^30N.
A 30-kg shopping cart full of groceries sitting at the top of a2.0-m hill begins to roll until it hits a stump at the bottom of the hill. How deep is the dent made in the car
The (kinetic) energy of a photon is 10 eV. An electron has the same de Broglie wavelength as the wavelength of the photon. What is the electron's kinetic energy
Emily throws her calculator straight up from the surface of the earth with an initial speed of 19.6 m/s. Neglect any effects due to air resistance. What is the magnitude of the calculator's displacement
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