Answer:
Explanation:
Given that:
The conductivity of the material = 5.0 s/m
; &
The electric field intensity of the material E = 250 sin(10¹⁰ t) V/m
(a) The conduction current density
(b) Displacement current density
Recall that:
∴
(c) The frequency at which will have the same magnitude is:
By substitution
f = 90 GHz
Answer: The wavelength changes by a factor of
Explanation:
The equation of the speed of a wave is:
Where:
is the speed, that remains unchanged
is the wavelength
is the frequency
Isolating we have:
Now, if we increase the frequency by a factor of 2:
This means the wavelength changes by a factor of
1 angstrom = 10^-8 cm
6.5 x 10-4 cm = 65 000 x 10-8 cm = 65 000 angstroms
answer 65 000 angstroms
Answer:
d)energy
Explanation:
Waves can transfer energy over distance without moving matter the entire distance. For example, an ocean wave can travel many kilometers without the water itself moving many kilometers. The water moves up and down—a motion known as a disturbance. It is the disturbance that travels in a wave, transferring energy.