Wave Intensity Flashcards
1
Q
Power in Waves:
A
Rate at which energy is emitted by its source in watts.
2
Q
Factors of intensity:
A
Power (W) and area (m^2) at which energy is spread in
3
Q
Wave intensity formula:
A
I = W/A, Wm^-2
4
Q
Area formula:
A
A = 4pi r^2, r = distance from source
5
Q
Inverse Square law:
A
I is inversely proportional to r^2
6
Q
Comparison formula:
A
I1/I2 = r2^2/r1^2
