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4. (14 points) After a long day working in Gru's Lab, Stuart decides to go sunbathing at the beach and lies on a blanket facing up towards the sun. His skin temperature is 33C and his total body surface area is 0.4 m?. The emissivity of his body is 0.96. The Boltzmann constant o = 5.67x10-8 W/m2K*. Neatly show your calculations to the questions below. I: The power radiated away by Stuart (in Watts) is Solar radiation falls on Stuart's body with a power per unit area of about 1200 W/m, but only his top-half is exposed to the sun. Assume that he absorbs this radiation with the same emissivity of 0.96. II: The radiative power absorbed by Stuart's body (in Watts) is Assume that Stuart loses heat only by radiation and not any other method. Ill: As he sunbathes, his body will settle to a final temperature (in Celsius) of Hint: Stuart will reach a final temperature when he emits radiation at the same rate as he absorbs! So, use the absorbed power from Part II to find the equilibrium temperature of his body