A steel bar of 1.00 kg is originally at 20.0°C. If 1 kcal is transferred into the bar estimate the final temperature of the steel bar.
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- Please AsapA copper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. The temperature of the free end of the copper rod is held constant at 100°C, and that of the far end of the aluminum rod is held at 0°C. If the copper rod is 0.24 m long, what must be the length of the aluminum rod so that the temperature at the junction is 50°C? Need Help? Read It Master It(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.
- A person pours 0.300 kg of hot water—initially in a pot at 70.0°C—into a 0.120 kg steel cup initially at 20.0°C. What is the equilibrium temperature?a cup of coffee sits on a table in an insulated mug. to coool the coffee down a ice block is added. the inital mass of coffee in the mug is 90g. the intial temperature of the coffee is 90 degree celsius. the ice block has started to melt and is then put into the coffee. the ice melts and the new temperature of the cofee is 78 degree c and the new mass is 110g. the ice block (final-intital mass) is 20g. what are teh tempeartuare changes for the coffee and ice (started at 0 degree celsius) also if specific heat of water is used for both the coffee and ice waht is the heat energy lost by the coffee and the heat energy gained by the ice after it melted?A 1.50-kg iron horseshoe initially at 590°C is dropped into a bucket containing 25.0 kg of water at 28.0°C. What is the final temperature of the water-horseshoe system? Ignore the heat capacity of the container and assume a negligible amount of water boils away. °C Need Help? Master It Read It