Answered: What is the change in temperature of…

What is the change in temperature of 2.2 kg of the following substances if 8.5 x 10^3 J of thermal energy is added to each of the substances: a) Methanol. b) Zinc

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter13: Temperature, Kinetic Theory, And The Gas Laws

Section: Chapter Questions

Problem 5PE: The Surface temperature of the Sun is about 5750 K. What is this temperature on the Fahrenheit...

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The Surface temperature of the Sun is about 5750 K. What is this temperature on the Fahrenheit scale?
Give an example of a physical property that varies with temperature and describe how it is used to measure temperature.
One easy way to reduce heating (and cooling) costs is to add extra insulation in the attic of a house. Suppose the house already had 15 cm of fiberglass insulation in the attic and in all the exterior surfaces. If you added an extra 8.0 cm of fiberglass to the attic, then by what percentage would the heating cost of the house drop? Take the single story house to be of dimensions 10 m by 15 m by 3.0 m. Ignore air infiltration and heat loss through windows and doors.
The law of atmospheres states that the number density of molecules in the atmosphere depends on height y above sea level according to nV(y)=n0en0gy/kaT where n0 is the number density at sea level (where y = 0). The average height of a molecule in the Earths atmosphere is given by yavg=0ynV(y)dy0nV(y)dy=0yen0gy/kaTdy0en0gy/kaTdy (a) Prove that this average height is equal to kBT/m0g. (b) Evaluate the average height, assuming the temperature is 10.0C and the molecular mass is 28.9 u, both uniform throughout the atmosphere.
(a) Suppose a meter Stick made of steel and one made of invar (an alloy of iron and nickel) are the same length at 0C. What is their difference in length at 22.0C ? (b) Repeat the calculation for two 30.0mlong surveyor's tapes.
. On a winter day, the air temperature is — 15°C, and the humidity is 0,001 kg/m3. (a) What is the relative humidity? (b) When this air is brought inside a building, it is heated to 20°C. If the humidity isn't changed, what is the relative humidity inside the building?
10. The following three hot samples have the same temperature. The same amount of heat is removed from each sample. Which one experiences the smallest drop in temperature, and which one experiences the largest drop? Sample A. 4.0 kg of water [c = 4186 J/(kg · C°)] Sample B. 2.0 kg of oil [c = 2700 J/(kg · C°)] Sample C. 9.0 kg of dirt [c = 1050 J/(kg · C°)] (a) C smallest and A largest (b) B smallest and C largest (c) A smallest and B largest (d) C smallest and B largest (e) B smallest and A largest
8. A farrier left a metal bar in a room of constant temperature of 0°C. The temperature of the metal bar drops from 120°C to 55°C after 25 minutes. In how many minutes will the metal bar continue to cool from 55°C to 50°C? * O A. 50. 3081 minutes B. 5.0308 minutes O C. 30. 5481 minutes O D. 3.0548 minutes
5. Some students believe that teachers are full of hot air. If I inhale 2.2 liters of gas at a temperature of 18°C and it heats to a temperature of 38° C in my lungs, what is the new volume of the gas?
10. The following three hot samples have the same temperature. The sameamount of heat is removed from each sample. Which one experiences thesmallest drop in temperature, and which one experiences the largest drop?Sample A. 4.0 kg of water [c 5 4186 J/(kg ? C8)] Sample B. 2.0 kg of oil [c 5 2700 J/(kg ? C8)] Sample C. 9.0 kg of dirt [c 5 1050 J/(kg ? C8)](a) C smallest and A largest (b) B smallest and C largest (c) A smallestand B largest (d) C smallest and B largest (e) B smallest and A largest
In an industrial factory, four different materials are heated up for the same temperature difference by providing energy. Which of the material will need more energy for the same temperature increase if O a. Nickle (C = 502.416 J/kg K) O b. Cobalt (C = 418.68 J/kg K) O c. Iron (C = 460.548 J/kg K) O d. Gold (C = 125.604 J/kg K)
16. Given that 635 K equals to 362°C, then 902 K equals to?a. 514°C.b. 629°C.c. 650°C.d. 1 175°C.17. As a copper wire is heated, its length increases by 0.50%. What is the change of thetemperature of the wire? (αCu = 16.6 × 10−6/C°)a. 83.0°Cb. 301°Cc. 60.2°Cd. 226°C18. If heat is flowing from a table to a block of ice moving across the table, which of thefollowing must be TRUE?a. The table is rough and there is friction between the table and ice.b. The ice is cooler than the table.c. The ice is changing phase.d. All three are possible, but none is absolutely necessary