Physics question!

The larger the amplitude the greater the energy is transferred.

In fat, for waves that travel at the same velocity, the rate at which energy is carried is proportional to the square of the amplitude of the wave. Thus, if you double the amplitude of the wave, you increase the energy it transfers every second by a factor of four.

I do not understand what exactly it means from in fact, can you please explain to me?

Question

Physics question!





The larger the amplitude the greater the energy is transferred. 

In fat, for waves that travel at the same velocity, the rate at which energy is carried is proportional to the square of the amplitude of the wave. Thus, if you double the amplitude of the wave, you increase the energy it transfers every second by a factor of four.

I do not understand what exactly it means from in fact, can you please explain to me?

korosh23 · Answer

@matt101

anonymous · Answer

Energy is proportional to the amplitude Squared. 

$$E \alpha A^2 $$

vincent-lyon.fr · Answer

"in fact" means "more precisely"

korosh23 · Answer

No I meant from the second paragraph I do not understand!

vincent-lyon.fr · Answer

Let's take an electric wave in a cable.
If you double the amplitude of the tension, you will also double the current, so the power carried by the wave will be multiplied by four.
This holds only for travelling waves. Standing waves behave differently.