A. Both statements A and B are correct. B. Statement A is correct, and B is incorrect. C. Statement A is incorrect, and B is correct. D. Neither statement A nor B is correct A. The principle of convection is exemplified by the flow of warm water from the tropics to poles whereby this process helps in the distribution of heat on the surface of the Earth. B. Temperature is crucial to biomolecules because their physical and chemical properties which determine their functions is directly affected by it.

A. Both statements A and B are correct. B. Statement A is correct, and B is incorrect. C. Statement A is incorrect, and B is correct. D. Neither statement A nor B is correct A. The principle of convection is exemplified by the flow of warm water from the tropics to poles whereby this process helps in the distribution of heat on the surface of the Earth. B. Temperature is crucial to biomolecules because their physical and chemical properties which determine their functions is directly affected by it.

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 30PE: (a) What is me 1imlume (in km3) of Avogadro’s number of sand grains if each grain is a cube and has...

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. 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?
(a) What is me 1imlume (in km3) of Avogadro’s number of sand grains if each grain is a cube and has sides mat are 1.0 mm long? (b) How many kilometers of beaches in length would this cover it me beach averages 100 m in width and 10.0 m in depth? Neglect air spaces between grains.
Match each term to the correct description. You will only use each term once. 4. Insulator A. A region of space that contains no matter. 5. Conductor B. Allows convection, but is a very good insulator. 6. Vacuum C. Any material that easily allows heat to move through it. 7. Solid D. Allows convection; can be a good conductor of heat. 8. Liquid E. Material that resists the movement of heat through it. 9. Gas F. No convection can occur in this. Match each term to the correct description. You will only use each term once. A. Heat transfer through electromagnetic waves. 10. Conduction 11. Thermal Equilibrium B. Thermal (heat) transfer by the contact of two objects. 12. Radiation C. Transfers heat by moving currents in gases and liquids. 13. Wind D. When two objects are at the same temperature. 14. Convection E. The study of how heat moves. F. Caused by convection currents in the earth's atmosphere. 15. Thermodynamics Σ
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 a. Gold (C = 125.604 J/kg K) b. Iron (C = 460.548 J/kg K) c. Nickle (C = 502.416 J/kg K) d. Cobalt (C = 418.68 J/kg K)
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
Match each term to the correct description. You will only use each term once. 10. Conduction A. Heat transfer through electromagnetic waves. 11. Thermal Equilibrium B. Thermal (heat) transfer by the contact of two objects. 12. Radiation C. Transfers heat by moving currents in gases and liquids. D. When two objects are at the same temperature. 13. Wind 14. Convection E. The study of how heat moves. F. Caused by convection currents in the earth's atmosphere 15. Thermodynamics
7. Modified Multiple Choice. Write the letter of the best option and provide an explanation on your answer. 50755. Which corresponds to the refrigerator statement of the second law of thermodynamics? A refrigerator: A. is a cooling device. B. is the opposite of a heat engine in terms of its operation. C. needs electricity to make the foods and drinks in it cooler. D. can be used to lower the temperature of foods and drinks stored in it.
10. How much thermal energy do you need to melt 1.0 gram of ice (an ice cube)? The latent heat of water is 334,000 J per kilogram. * A. 334 joules B. 334 kilojoules C. 3,340 kilojoules D. 33,400 kilojoules E. 334,000 kilojoules
QUESTION 1 Which of the following statements in regard to temperature is least valid? a. Temperature is that property which gives rise to thermal equilibrium. b. The lowest limit for all possible temperature is -273.150 c. C. If two systems are both in thermal equilibrium with a third system, then they are in thermal equilibrium with each other. d. A phase change in matter, such as the process of melting, requires a large temperature change. e. Temperature is proportional to the average internal energy in a substance.
6. A steel meter stick is left alone in sunlight. Calculate the change in length when the temperature increases from 25.0°C to 60.0°C. The coefficient of linear expansion of steel is 1.2 x 10^(-5) K^(-1). * A. the length increased by 0.42 millimeters B. the length decreased by 0.42 millimeters C. the length increased by 0.42 centimeters D. the length decreased by 0.42 centimeters E. the length increased by 4.2 centimeters
4. Compare a hot cup of water to a cold swimming pool. In which objects are the molecules moving faster? Explain. 5. An ice cube melts on a table. a. Is the ice cube losing or gaining thermal energy? Explain how you can tell. b. Energy cannot be made or lost. Where is the thermal energy coming from or going to? 6. A bottle of water freezes in the freezer. a. Is the water losing or gaining thermal energy? Explain how you can tell. b. Energy cannot be made or lost. Where is the thermal energy coming from or going to
4. Which answer describes a way that a liquid can be turned into a gas? A. Apply enough heat to cause evaporation. B. Apply freezing temperatures to cause condensation. C. Lower the temperature of the container to allow vaporization. D. Maintain a constant temperature over a long enough time to cause freezing. Explanation: