1 A Man Consumes 3800 Kcal Of Food In One Day Converting Most Of It To Thermal Energy To Maintain Body Temperature If 1 (46.36 KiB) Viewed 11 times
1. A man consumes 3800 kcal of food in one day, converting most of it to thermal energy to maintain body temperature. If he loses half of this energy by evaporating water (through breathing and sweating), how many kilograms of water evaporate? (the latent heat of water is 539 kcal/kg) kg
1. A walrus transfers energy by conduction through its blubber at the rate of 135 W when immersed in -1 deg C water. The walrus's internal core temperature is 36 deg C, and it has a surface area of 2.5 m². What is the average thickness of its blubber, which has the conductivity of fatty tissues without blood (k=0.2 J/(s m °C))? d= v cm
1. Radiation makes it impossible to stand close to a hot lava flow. Calculate the rate of heat transfer by radiation from 2 m² of 1197 deg C fresh lava into 30 deg C surroundings, assuming lava's emissivity is 0.8. o=5.67X10-8 J/(s m2 °C) Use the sign convention for heat leaving or entering the system. V kW t
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