Integrated Science
Integrated Science
7th Edition
ISBN: 9780077862602
Author: Tillery, Bill W.
Publisher: Mcgraw-hill,
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Chapter 4, Problem 6PEA
To determine

The amount of heat that the freezer has to remove from glass bowl and iron pan to cool them, from 68°F to 38°F.

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A 0.7-kg glass bowl (celass= 0.2 kcal/kg°C) and a 0.7 kg iron pan (Ciron= 0.11 kcal/kg°C) have a temperature of 83°F when placed in a freezer. How much heat will the freezer have to remove from each to cool them to 12°F? Round answers to one significant figure. glass bowl: kcal iron pan: kcal
How much heat would flow into an 80 cm x 40 cm x 3.0 mm glass window each hour on a day when the outside temperature is 103 F and inside temperature is 70 F? Kglass = 0.84 W/m-K. O 1.64x10³ J/s O 2.96x10² J/s O 1.64x10² J/s O 2.96x10³ J/s
You wish to heat 20 kg of water from 40°C to 80°C.  How many kcal of heat are necessary to do this?  To how many kJ does this correspond? You submerge 100 grams of steel in 200 grams of water.  If the steel has an initial temperature of 90°C and the water has an initial temperature of 15°C, what is the final temperature of the system?  The specific heat capacity of the steel is 0.15 cal/g•°C. Suppose that the 1.3 km span of the Golden Gate Bridge had no expansion joints.  Calculate how much longer the bride would be if the temperature of the bridge increases by 25°C.
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