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  1. I

    Calculation of peak acoustic intensity (in water)

    If we know the max. pressure (p) is 2.5 MPa and T = 20 C. Peak intensity, I = p^2 / rho * c where rho = density of water: 0.9982E03 kg/m^3 and c = speed of sound in water: 1482.3 m/s at 20 C I = (2.5E06 [Pa])^2 / 1.4796E06 [kg/m^2/s] = 4.2241E06 W/m^2 Is this correct?
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    What ACTUALLY causes a magnetic field to be generated when there is a current?

    Here's a question for you: Why is there SOMETHING and not NOTHING? Think about it!