In an experiment, the need arose to warm 3.00 kg of air. As a result, all the heat extracted when 5.00 kg of water was cooled through 4ºC was supplied to the air. Assuming the respective specific heat capacities of water and air to be 4186 J/ kg °C and 721 J kg 1 °C• ', by how much did the temperature of the air rise? 1 °C or less 5.53 °C 6.67 °C 38.7 °C. A B D

Two objects A & B are put into thermal contact and come to equilibrium. • A) m₁ = 100 g; CA = 900 J/(kg K) • B) mB = 200 g; CB = 450 J/(kg K) Their temperatures are initial TA and TÂ, and object A is initially hotter. Which statement about the final equilibrium temperature TEQ is correct? Tave - TA+TB 2 is the average of the initial temperatures. TEQ TA Tave > TEQ > TB Tave

(9%) Problem 9: Suppose a human body's core internal temperature is 37.0°C, the skin temperature is 34.0°C, the thickness of the tissues between averages 1.05 cm, and the surface area is 1.3 m2. Thermal conductivity k (J/s• m C) 0.042 Substance Glass wool Wool 0.04 Glass 0.84 Human body 0.2 Ceramic 0.84 Wood 0.08-0.16 Air 0.023 Fatty tissue Styrofoam 0.2 0.010 Otheexpertta.com Calculate the rate of heat conduction, in watts, out of the human body. Q/At = Grade Summary Deductions Potential 0% 100% sin() tan() E Submissions Attempts remaining: 10 (0% per attempt) detailed view cos() 7 9 HOME cotan() asin() acos() 4 atan() cosh() acotan() sinh() 1 3 tanh() cotanh() END Degrees Radians VOL BACKSPACE CLEAR DEL Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback.

Homework 2: Problem 6:   To conserve energy, the room temperatures in a specific house are kept at 68° F in the winter and 77° F in the summer. Part (a)  What is the winter temperature on the Celsius scale? Tw[°C] = ______ ∘C Part (b)  What is the summer temperature on the Celsius scale? Ts[°C] = ______ ∘C