Questions 1) Show that the units are consistent on both side of the heat equations, Q = mcAT and Q = mL. 2) Which one or

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: Questions 1 Show That The Units Are Consistent On Both Side Of The Heat Equations Q Mcat And Q Ml 2 Which One Or 1 (60.22 KiB) Viewed 33 times

: Questions 1 Show That The Units Are Consistent On Both Side Of The Heat Equations Q Mcat And Q Ml 2 Which One Or 2 (44.95 KiB) Viewed 33 times

: Questions 1 Show That The Units Are Consistent On Both Side Of The Heat Equations Q Mcat And Q Ml 2 Which One Or 3 (25.82 KiB) Viewed 33 times

: Questions 1 Show That The Units Are Consistent On Both Side Of The Heat Equations Q Mcat And Q Ml 2 Which One Or 4 (47.61 KiB) Viewed 33 times

Questions 1) Show that the units are consistent on both side of the heat equations, Q = mcAT and Q = mL. 2) Which one or more of the following processes involves heat? (circle one or more) a. The brakes in your car get hot when you stop. b. A steel block is held over a candle. c. You push a rigid cylinder of gas across a frictionless surface. d. You push a piston into a cylinder of gas, increasing the temperature of the gas. USH e. You place a cylinder of gas in hot water. The gas expands, causing the piston to rice and lift a weight. The temperature of the gas does not change. 3) Which law of thermodynamics allows you to measure the initial temperature of the metal? (circle one) a. Zeroth Law of Thermodynamics b. First Law of Thermodynamics c. Second Law of Thermodynamics d. Third Law of Thermodynamics 4) What does the law of conservation of energy tell us about the amount of energy leaving a hot object and the amount of energy entering a cold object?

Lab 3 | Specific Heat and Latent Heat 5) In the old days, it was common to bring a hot object to bed with you to help stay warm on a cold winter night. Which would be better to keep you warm through the cold night: a 10 kg piece of iron or a 10 kg jug of hot water at the same temperature? Explain. Page 1 15 6) Three metals blocks (aluminum, copper, and lead) are placed on a hot plate. From fastest to slowest, rank them in order of how quickly their temperatures will increase. 7) Objects A and B are brought into close thermal contact with each other, but they are well isolated from their surroundings. Initially T₁ = OC and T8 = 100C. The specific heat capacity of A is less than the specific heat capacity of B. The two objects will soon reach thermal equilibrium. The final temperature is (circle one) a. T₁ < 50C c. Tr> 50C Explain your reasoning. b. T₁ = 50C 8) Even on a hot day, a swimmer may feel "cool" after getting out of a swimming pool. Explain this "cool" feeling using the concept of latent heat of vaporization.

Questions 1) Show that the units are consistent on both side of the heat conduction AQ equation: = KA AT 2) A metal plant stand on a wooden deck feels colder than the wood around it. It is necessarily colder? Explain.

14 | Page 3) Several days after the end of a snowstorm, the roof of one house is still completely covered with snow, and another house's roof has almost no snow cover. Which house is most likely better insulated? Explain. 4) Two thin rods are made from the same material and are of lengths L₁ and L2. The two ends of the rods have the same temperature difference. What should the relation be between their diameters and lengths so that they conduct equal amounts of heat energy in a given time? (show work) a. = دات ذات ذات ذات b. = C. ARA AS A d₁ Lab 4 | Thermal Conductivity d. 22=11202 20