4-HeatandTemperature - Name Lab Partners Heat Temperature...

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Chapter 6 / Exercise 6.5
College Physics
Serway/Vuille
Expert Verified
Heat & Temperature - 1 - Name: Lab Partners: Heat & Temperature PurposeTo study the properties of and the relationship between heat and temperature. EquipmentA.Computer w/Capstone, heatandtemperature.capfile, 2 temperature sensors, 2 graduated cylinders (100 or 250 mL), hot water supply, 4 Styrofoam cups, funnel B.Same as part (A) C.Same as part (A) D.None E.Same as part (A), brass and aluminum cylinders, thread, scissors, gram scales (share) 1)Go to the website ic.arc.losrios.edu/~louckss/start.htm, and then click on your course link, and then Lab Files. Download and save the heatandtemperature.capfile from this folder to the computer desktop. 2)Turn on the computer interface. Plug a temperature sensor into analog channel A, and another into analog channel B. A.The Effects of Pouring on Temperature 1)Measure about 50 grams (or 50 mL, since 1 mL of water has a mass of 1 gram) of hot water (about 60 to 70 °C, if available) in a graduated cylinder, and pour it into an empty Styrofoam cup. (Use paper towels to clean up water drops/spills on the table.) 2)Open the heatandtemperature.capfile, and click Record. 3)Put one of the temperature sensors in the water in the cup. Stir a little while waiting several seconds until the temperature sensor reading stabilizes. (The temperature reading will likely continue to fluctuate, but consider it “stable” once the reading is changing very slowly.) Read the temperature, and then immediately pour the water into a second empty Styrofoam cup. Record the “just before” temperature initialTin the first row of the Table 1 below. 4)Immediately measure the temperature of the water in the second cup—again stir a little while waiting just long enough until the reading stabilizes. Record the “just after” temperature finalTin the first row of Table 1. 5)Determine the change in temperature finalinitialTTTΔ=-due to pouring the hot water. Table 1: Effects of Pouring Water on Temperature Water type initialT(°C) finalT(°C) TΔ(°C) Hot Cold
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Chapter 6 / Exercise 6.5
College Physics
Serway/Vuille
Expert Verified
Heat & Temperature - 2 - 6)Which type of water undergoes the greatest temperature change when pouring? 7)Try to explain a physical reason for this. 8)To minimize the effects of pouring when mixing hot and cold water, should you always pour hot water into cold water, or cold water into hot waterMake sure you always do this throughout the lab when mixing hot and cold water. B.Mixing Equal Masses of Hot and Cold Water In this part of the lab you will mix equal masses of hot and cold water, and measure the final temperature of the warm water mixture. 9)The masses of hot and cold water should always be equal. For each mixture: a)Measure the amount of each type of water in a graduated cylinder. Use at least 25 grams (25 mL) of water eachfor the hot water and cold water, but don’t use so much that you overfill the Styrofoam cups when mixing the hot and cold water. Always use one graduated cylinder for hot water and the other graduated cylinder for cold waterto minimize temperature changes. b)Record the mass mof the hot (or cold—they are equal) water in Table 2 below. ?

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