JAMB - Physics (2006 - No. 23)
The correct unit of energy density is?
kg m3 s-2
kg m2 s-2
kg m-3 s-2
kg m-1 s-2
解释
Energy density = \(\frac{\text{Energy}}{\text{Volume}}\) = \(\frac{\text{Joule}}{m^3}\) = \(\frac{kg m^2 s^{-2}}{m^3}\) = kgm\(^{-1}\)s\(^{-2}\)