Question

During light activity, a 70-kg person may generate 200 kcal

/h. Assuming that 20% of this goes into useful work and the
other80% is converted to heat, calculate the temperature rise of
thebody after 1.00 h if none of this heat were transferred to
theenvironment.

Answer 1

`2.75387\ ^(\circ)`

Step-by-step explanation:

m = Mass of person = 70 kg

c = Specific heat of human body =
`0.83\ J/kg^(\circ)C`

`\Delta T` = Change in temperature

Time taken is 1 hour

Heat is given by

`Q=mc\Delta T\\\Rightarrow \Delta T=(Q)/(mc)\\\Rightarrow \Delta T=(0.8* 200* 1)/(70* 0.83)\\\Rightarrow \Delta T=2.75387\ ^(\circ)C`

The rise in temperature is
`2.75387\ ^(\circ)C`