- #1
Janiceleong26
- 276
- 4
Homework Statement
Is intensity related to this question? The answer is B.
Homework Equations
I^2 ∝ A^2
I=P/A,
where I is intensity, P is power, and A is area
The Attempt at a Solution
I tried using I=P/A, and after substituting, I get, A^2=E/S, which gives E=A^2 S
And then, the new wave now is (2A)^2= x/(1/2S), where x is the energy per unit time after the changes, and this gives x=8 A^2 S, which..does not give an answer..