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1. What is the condition for a medium to be a perfect dielectric? How do the characteris- tics of wave propagation in a perfect dielectric medium differ from those of wave propagation in free space?
2. What is the criterion for a material to be an imperfect dielectric? What is the significant feature of wave propagation in an imperfect dielectric as compared to that in a perfect dielectric?
3. Give two examples of materials that behave as good dielectrics for frequencies down to almost zero.
4. What is the criterion for a material to be a good conductor?
5. Give two examples of materials that behave as good conductors for frequencies of up to several gigahertz.
You're planning to study in Europe, and you want a transformer designed to step 230 V. how many should the secondary have
A 1 centimeter tall candle flame is 62 centimeter from a lens with a focal length of 22 centimeter. Evaluate what is the image distance
If 3.10 moles of a monatomic ideal gas at a temperature of 300 K are expanded isothermally from a volume of 2.05 L to a volume of 5.95 L, calculate the heat flow into or out of the gas
The record distance in the sport of throwing cowpats is 81.1 m. This record toss was set by Steve Urner of the United States in 1981, Determine the initial speed of the projectile
While in church, Peter notices a lamp hung by a light chain to the ceiling. Peter counts 85.0 cycles in 592 seconds. How high is the ceiling above the lamp
To reach a picnic basket, an ant walks from his hill located at 6.00m, 50.0 degress north of east to the basket located at 8.00m 24.0 degress south of east
Four identical charges (+2.2 μC each) are brought frominfinity and fixed to a straight line. Each charge is 0.47 m fromthe next. Determine the electric potential energy of thisgroup.
a rock is thrown horizontally with a speed of 17 ms from a vertical cliff of height 30 m.a how long does it take to
A bead with a mass of 0.083 g and a charge of 15 nC is free to slide on a vertical rod. At the base of the rod is a fixed 10nC charge. In stability, at what height above the fixed charge does the bead rest.
A child and sled with a combined mass of 49.0 kg slide down a frictionless slope. what is the height of the hill
for uniform circular motion describe how the speed velocity and acceleration change with time. for each vector quantity
Two capacitors, C1 = 2x10^-6 F and C2 = 4x10^-6 F, are connected in series with an 18 V battery. Find the final charge and potential difference for each capacitor
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