A new term for the concept of heat.
Answer to Problem 1PQ
Thermotransportation energy is an appropriate term for the concept of heat.
Explanation of Solution
The energy transferred from a system to its surrounding or vice versa is represented by the term heat. The
The term apparopriate for heat is thermotransportation enrgy. This explains the temperature difference in the system and surrounding. This term explains the energy transfer between the system and surrounding as well.
Want to see more full solutions like this?
Chapter 21 Solutions
Physics for Scientists and Engineers: Foundations and Connections
- Compare the SI units of specific heat and latent heat and explain any differences.arrow_forwardGive two examples each of good thermal conductors and good thermal insulators. In general, what makes a substance a conductor or an insulator?arrow_forwardThe latent heat of vaporization for water at room temperature is 2 430 J/g. Consider one particular molecule at the surface of a glass of liquid water, moving upward with sufficiently high speed that it will be the next molecule to join the vapor. (a) Find its translational kinetic energy. (b) Find its speed. Now consider a thin gas made only of molecules like that one. (c) What is its temperature? (d) Why are you not burned by water evaporating from a vessel at room temperature?arrow_forward
- . A 1,200-kg car going 25 m/s is brought to a stop using its brakes. Let's assume that a total of approximately 20 kg of iron in the brakes and wheels absorbs the heat produced by the friction. (a) What was the car's original kinetic energy? (b) After the ear has stopped, what is the change in temperature of the brakes and wheels?arrow_forwardThe U.S. penny is now made of copper-coated zinc. Can a calorimetric experiment be devised to test for the metal content in a collection of pennies? If so, describe the procedure.arrow_forwardOne method at getting a tight fit, say of a metal peg in a hole in a metal block, is to manufacture the peg slightly larger than the hole. The peg is then inserted when at a different temperature than the block. Should the block he hotter or colder than the peg during insertion? Explain your answer.arrow_forward
- Identify the type of energy transferred to your body in each of the following as either internal energy, heat transfer, or doing work: (a) basking in sunlight (b) eating food; (c) riding an elevator to a higher floor.arrow_forwardIn 1801, Humphry Davy rubbed together pieces of ice inside an icehouse. He made sure that nothing in the environment was at a higher temperature than the rubbed pieces. He observed the production of drops of liquid water. Make a table listing this and other experiments or processes to illustrate each of the following situations, (a) A system can absorb energy by heat, increase in internal energy, and increase in temperature, (b) A system can absorb energy by heat and increase in internal energy without an increase in temperature, (c) A system can absorb energy by heat without increasing in temperature or in internal energy, (d) A system can increase in internal energy and in temperature without absorbing energy by heat, (e) A system can increase in internal energy without absorbing energy by heat or increasing in temperature.arrow_forwardWhen a driver brakes an automobile, the friction between the brake drams and the brake shoes converts the cars kinetic energy to thermal energy. If a 1 500-kg automobile traveling at 30 m/s comes to a halt, how much does the temperature rise in each of the four 8.0-kg iron brake drums? (The specific heat of iron is 448J/kg C.)arrow_forward
- Construct Your Own Problem Consider a person outdoors on a cold night. Construct a problem in which you calculate the rate of heat transfer from the person by all three heat transfer methods. Make the initial circumstances such that at rest the person will have a net heat transfer and then decide how much physical activity of a chosen type is necessary to balance the rate of heat transfer. Among the things to consider are the size of the person, type of clothing, initial metabolic rate, sky conditions, amount of water evaporated, and volume of air breathed. Of course, there are many other factors to consider and your instructor may wish to guide you in the assumptions made as well as the detail of analysis and method of presenting your results.arrow_forward€69. Integrated Concepts (a) A large electrical power facility produces 1600 MW of “waste heat.” which is dissipated to the environment in cooling towers by warming air flowing through the towers by 500C. What is the necessary flow rate of air in m3/s ? (b) Is your result consistent with the large cooling towers used by many large electrical power plants?arrow_forwardA 4ton air conditioner removes 5.60107J (48,000 British thermal units) from a cold environment in 1.00 h. (a) What energy input in joules is necessary to do this if the air conditioner has an energy efficiency rating (EER) of 12.0? (b) What is the cost of doing this if the work costs 10.0 cents per 3.60106J (one kilowatt—hour)? (c) Discuss whether this cost seems realistic. Note that the energy efficiency rating (EER) of an air conditioner or refrigerator is defined to be the number of British thermal units of heat transfer from a cold environment per hour divided by the watts of power input.arrow_forward
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningAn Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning