Answer:
Speed of an EM wave is different in air and in water.
Explanation:
The speed of an EM wave is different in air and water .
Since the frequency of any EM wave is its characteristic property, therefore wavelength and speed of EM wave Change on changing the medium of propogation.
Also the refractive index of any medium is defined as the ratio between light's speed in vacuum to the light's speed in any medium.
Also ,it can be define as speed of any EM wave in any medium = c/refractive index of medium.
Here, c is the speed of light, .
Answer:
The bottom two lines.
Explanation:
They need their own line of voltage quantity. A parallel circuit has the definition of 'two or more paths for current to flow through.' The voltage does stay the same in each line.
4.85 x10^4. This is the right answer says yahoo. I hope it helps.
See if you get the answer with this formulae.
Technically, displacement is the "shortest" distance between any two points. If you say displacement is greater than distance, you will contradict the above statement. Displacement is always less than or equal to distance. Note that distance is a scalar whereas displacement is a vector. :)