PHYS320

# PHYS320 - Homework for Week 1 Due 11:59pm on Friday Note...

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Homework for Week 1 Due: 11:59pm on Friday, January 14, 2011 Note: You will receive no credit for late submissions. To learn more, read your instructor's Grading Policy [ Switch to Standard Assignment View ] Problem 16.12

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Part A At what temper ature does the numeri cal value in F match the numeri cal value in C? ANSWER: - 4 0 . 0 C o r r e c t
Problem 16.16 A cylinder contains 4.0 g of nitrogen gas. A piston compresses the gas to half its initial volume. Afterward,

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Part A By what factor has the mass density of the gas increas ed? ANSWER: 2 . 0 0 C o r r e c t Part B Has
Problem 16.53 A compressed-air cylinder is known to fail if the pressure exceeds 110 . A cylinder that was filled to 25 at 20 is stored in a warehouse. Unfortunately, the warehouse catches fire and the temperature reaches 950 .

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Part A Does the cylinde r blow? ANSWER: Yes No C o r r e c t
Problem 16.11 The lowest and highest natural temperatures ever recorded on earth are -127 in Antarctica and 136 in Libya.

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Part A What are these temper atures in ? Enter your answer s numeri cally separat ed by a comma . ANSWER: = - 8 8 . 3 , 5 7 . 8 C o r r e c t
Quantitative Problem 16.6

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Part A A consta nt- volum e gas thermo meter is filled with air whose pressur e is 96 Pa at the triple point of water. What would the pressur e be at 172 K? ANSWER: 60. 4 Pa 152 Pa
Quantitative Problem 16.10

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Part A Someti mes an experi ment require s a certain pure gas to be used at reduce d pressur e. One way to achiev e this is to purcha se a sealed glass contain er filled with the gas, and to introdu ce the gas into a vacuu m by attachi ng the glass contain er to the vacuu
Problem 17.21 A 500 metal sphere is heated to 300 , then dropped into a beaker containing 300 of mercury at 20.0 . A short time later the mercury temperature stabilizes at 99.0 .

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Part A Identif y the metal. ANSWER: lead iron alu min ium C o r r e c t

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Part A What quantit ies appear in the first law of thermo dynam ics? ANSWER: For ce, mas s, and acc eler atio n Iner tia, torq ue, and ang ular mo me ntu m Wo rk, heat , and

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Part A What was the origina l unit for measur ing heat? ANSWER: Btu Wat t Joul e Pas cal Cal orie

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Part A Heat is ANSWER: the am oun t of ther mal ene rgy in an obj ect. the ene rgy that mo ves fro m a hott er obj ect to a col der obj ect. a flui d- like sub
Score Summary: Your score on this assignment is 76.7%. You received 15.33 out of a possible total of 20 points. A laboratory experiment is to be run at 50 K. Express this temperature in Celsius to the nearest degree. - 223 °C 323 °C 423 °C 82° C Correct

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PHYS320 - Homework for Week 1 Due 11:59pm on Friday Note...

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