Physics - Heat & Thermo Question with Solution | TestHub

A person of surface area 1.75 m${}^2$ is lying out in the sunlight to get sun bath. If the intensity of the incident sunlight is $7\times 10^2$ W/m${}^2$, at what rate must heat be lost (in watt) by the person in order to maintain a constant body temperature? (Assume the effective area of skin exposed to the Sun is 40% of the total surface area and that internal metabolic processes contribute another 90 W for an inactive person.) Emissivity of the body is 0.6.