Q2 Steel train rails are laid in 10.5-m-long segmentsplaced end to end. The rails are laid on a winterday when their temperature is -1.0°C.SUDITIPart BYPart AHow much space must be left between adjacent rails if they are just to touch on a summer day when theirtemperature is 33.0°C?Express your answer with the appropriate units.Request AnswerD=SubmitValueRequest AnswerUnitsReview ConstantsIf the rails are originally laid in contact, what is the stress in them on a summer day when their temperature is33.0°C?Express your answer in pascals. Enter positive value if the stress is tensile and negative value if thestress is compressive.195] ΑΣΦ 1CO ?Pa

Answered: Image /qna-images/answer/ff7d7821-9fc4-4bec-a6b7-c58fd802d219.jpg

teel train rails are laid in 10.5-m-long segments laced end to end. The rails are laid on a winter day when their temperature is -1.0°C. Submit Part B ▾ Part A How much space must be left between adjacent rails if they are just to touch on a summer day when their temperature is 33.0°C? Express your answer with the appropriate units. A nequest Answer PA D= Value Submit Request Answer If the rails are originally laid in contact, what is the stress in them on a summer day when their temperature is 33.0°C? Units Express your answer in pascals. Enter positive value if the stress is tensile and negative value if the stress is compressive. 95] ΑΣΦ 4 CINC ? Pa

teel train rails are laid in 10.5-m-long segments laced end to end. The rails are laid on a winter day when their temperature is -1.0°C. Submit Part B ▾ Part A How much space must be left between adjacent rails if they are just to touch on a summer day when their temperature is 33.0°C? Express your answer with the appropriate units. A nequest Answer PA D= Value Submit Request Answer If the rails are originally laid in contact, what is the stress in them on a summer day when their temperature is 33.0°C? Units Express your answer in pascals. Enter positive value if the stress is tensile and negative value if the stress is compressive. 95] ΑΣΦ 4 CINC ? Pa

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter18: Temperature

Section: Chapter Questions

Problem 13P

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Similar questions

The height of the Washington Monument is measured to be 170.00 m on a day when the temperature is 35.0 . What will its height be on a day when the temperature falls to -10.0 ? Although the monument is made of limestone, assume that its coefficient of thermal expansion is the same as that of marble. Give your answer to five significant figures.
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An aluminum rod 0.500 m in length and with a cross sectional area of 2.50 cm2 is inserted into a thermally insulated vessel containing liquid helium at 4.20 K. The rod is initially at 3(H) K. (a) If one-halt of the rod is inserted into the helium, how many liters of helium boil off by the time the inserted half cools to 4.20 K? Assume the upper half does not yet cool, (b) If the circular surface of the upper end of the rod is maintained at 300 K. what is the approximate boil-off rate of liquid helium in liters per second after the lower half has reached 4.20 K? (Aluminum has thermal conductivity of 3 100 YV/m K at 4.20 K; ignore its temperature variation. The density of liquid helium is 125 kg/m3.)
How much stress is cleated in a steel beam if its temperature changes from 15 to 40 but it cannot expand? For steel, the Young's modulus Y=210109N/m2 from Stress, Strain, and Elastic Modulus (http://cnx.org/content/m58342/latest/#fs-id1163713086230). (Ignore the change in area resulting from the expansion.)
At 25.0 m below the surface of the sea, where the temperature is 5.00C, a diver exhales an air bubble having a volume of 1.00 cm3. If the surface temperature of the sea is 20.0C, what is the volume of the bubble just before it breaks the surface?
The thermal conductivities of human tissues vary greatly. Fat and skin have conductivities of about 0.20 W/m K and 0.020 W/m K, respectively, while other tissues inside the body have conductivities of about 0.50 W/m K. Assume that between the core region of the body and the skin sin face lies a skin layer of 1.0 mm, fat layer of 0.50 cm, and 3.2 cm of other tissues. (a) Find the R-factor for each of these layers, and the equivalent R-factor for all layers taken together, retaining two digits. (b) Find the rate of energy loss when the core temperature is 37C and the exterior temperature is 0C. Assume that both a protective layer of clothing and an insulating layer of unmoving air a absent, and a body area of 2.0 m2.
A high-end gas stove usually has at least one burner rated at 14 000 Btu/h. (a) If you place a 0.25-kg aluminum pot containing 2.0 liters of water at 20.C on this burner, how long will it take to bring the water to a boil, assuming all the heat from the burner goes into the pot? (b) Once boiling begins how much time is required to boil all the water out of the pot?
Consider an object with any one of the shapes displayed in Table 10.2. What is the percentage increase in the moment of inertia of the object when it is warmed from 0C to 100C if it is composed of (a) copper or (b) aluminum? Assume the average linear expansion coefficients shown in Table 16.1 do not vary between 0C and 100C. (c) Why are the answers for parts (a) and (b) the same for all the shapes?