Physics help!?

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Ijay, I just got Physics for Dummies and the book lists the Stefan-Boltzmann constant as 5.67*10^-8 J[s-m^2-K^4] when everywhere else on the internet it says: The value of σ is 5.670 400(40)×10−8 W·m^-2·K^-4? The first one is in Joules, the one on Wikipedia and everywhere else is in Watts. What's wrong here? Is it just in 2 different units? Thanks.

2007-06-19 19:48:29 · 3 answers · asked by Invader Z 1 in Science & Mathematics ➔ Physics

3 answers

1 Watt = 1 joule/sec

So the units are either J / sec m^2 ºK^-4 or watt/ m^2 ºK^-4

2007-06-19 20:01:19 · answer #1 · answered by gp4rts 7 · 0⤊ 0⤋

A watt is the power to deliver one joule of energy per second.

2007-06-20 02:53:32 · answer #2 · answered by Anonymous · 0⤊ 0⤋

im getting a head
ache

2007-06-20 02:53:06 · answer #3 · answered by Brennan J 1 · 0⤊ 0⤋