Two infinite, flat, parallel, and perfectly conducting metal plates lie in the planes . the space between the plates acts as a cavity oscillator in which 2aythe electric field is given by: , where is a unit vector in 0(/eecosyasintk)k)the direction of z-axis. (a)assuming that is in the x-direction, apply ampere’s to bobtain the magnetic field everywhere inside the cavity region.(b) use ampere’s law to compute the current per meter on the metal surface, and compare with the displacement current per meter between the plates.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

radial fractures in a piece of glass look most like which of the following?

a. spokes of a wheel

b. a circle

c. a zig zag

d. none of the above

the correct answer is a. spokes of a wheel

hope this (: