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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.
the 4p state in potassium is split by its spin-orbit interaction into the 4p32 lamda 766.41 nm and 4p12 lamda 769.90
Two objects with masses of 4.00 kg and 5.00 kg are connected by a light string thatpasses over a frictionless pulley. Determine the tension in the string. Determine the acceleration of each object.
A car entering a freeway ramp accelerates from 14 m/s to 25 m/s in 10 seconds. what is the cars average acceleration during this 10 seconds.
Fully stripped (all electrons removed) oxygen (16O) ions are accelerated from rest in a particle accelerator using a total potential difference of 10.0 MV. What is the total power the beam dump has to absorb
The pilot of an aircraft wishes to fly due west in a 48.6km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 174 km/h. How many degrees from west should the aircraft head? Let clockwise be positive. Answer in d..
two uncharged spherical conductors are separated by a long distance. sphere a of radius r1 8cm is charged with q1
Looking out the window of a train you observe the passengers on a second train moving in the opposite direction at a constant velocity. determines which of the two trains is actually moving
If the frequency of oscillation of the wave emitted by an FM radio station is 101.4 MHz, calculate the wave's period of vibration
The driver of a 1250 kg car, initially traveling at 11.6 m/s, applies the brakes, bringing the car to rest in a distance of 23.0 m. Find the net work done on the car
Two in-phase speakers 2.0 m apart in a plane are emitting 1800 Hz sound waves into a room where the speed of sound is 340m/s . Is the point 4.0m in front of one of the speakers, perpendicular to the plane of the speakers, a point of maximum constr..
A mail bag with a mass of 124 kgis suspended by a vertical rope 8.0 mlong. How much work is done by the worker in moving the bag to thisposition
In the experiment, if the accelerating voltage is 300 V and the radius of the beam path is 3.2 cm, what is the Lorentz force on a single electron
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