1. If we increase the distance to twice it's original value, the light intensity is reduced by one-fourth, the light intensity would be:
I0/4
2. rms magnetic field is inversely proportional to distance, so the new rms magnetic field would be:
B0/2
3. average energy density is inversely proportional to the square of the distance, so the new average energy density is:
E0/4
48 degrees Farenheit, as 0 degrees Celsius is equivalent to 32 degrees Farenheit.
Answer:
Amplitude : The height of the wave from the origin to the crest/peak or trough
Explanation: