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Calculate the rate of heat transfer by radiation from a car radiator at $105C$ into a $55\mathrm{.}0C$ environment, if the radiator has an emissivity of $0\mathrm{.}650$ and a $1\mathrm{.}30-m^2$ surface area.

$-424w$

You are correct.

Your recelpt no$.$ is $159-1153,$ Previous Tries

What is the equivalent loss in energy $($in terms of horsepower$)$ of the heat transfer by an automobile engine? $($Is this a significant fraction of the heat transfer by an automobile engine? To answer this, assume a horsepower of $235$ hp $(175$ kW $)$ and the efficiency of automobile engines as $26\%.)($You do not need to enter any units.$)$ a$.$ hp

$$ Submission not graded. Use more significant figures. Tiles $4/99$ Previous Thies help with part $2$