use the equation P = AoT^4
where P is Q/t
A is surface area
"o" is actually the greek letter for Stefan Boltzman constant :
5.67x10^(-8) J/s*m^2*K^4
* not greek letters on keyboard lol
and T is temperature in kelvin
DON'T FORGET TO CONVERT YOUR UNITS
You should get:
P= A o T^4
P = (8.54x10^(-4))(5.67x10^(-8))(24+273)^4
A is 8.54x10^(-4) because you have to convert cm^2 to m^2 because of the units for Boltzman's constant
The U.S. five-cent coin, the nickel, has a mass of 5.1 g, a volume of 0.719 cm3, and a total surface area of 8.54 cm2. Assuming that a nickel is an ideal radiator, how much radiant energy per second comes from the nickel, if it is at 24∘C?
1 answer