The second law of thermodynamic is measure of how much useful work you can get from an engine. is the relationship between heat, work, and changes in the internal energy of a closed system. a measure of the disorder in a system. the law of physics that places restrictions on the ways heat and other forms of energy can be transformed and used to do work. a measure of how much useful work you can get from an engine.

The second law of thermodynamic is measure of how much useful work you can get from an engine. is the relationship between heat, work, and changes in the internal energy of a closed system. a measure of the disorder in a system. the law of physics that places restrictions on the ways heat and other forms of energy can be transformed and used to do work. a measure of how much useful work you can get from an engine.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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17. An avalanche of ice and snow of mass 1800 kg slides a vertical distance of 160 m down a mountainside. If the temperature of the ice, snow, mountain and surrounding air are all at 0°C, what is the change in entropy of the universe? A. 31000 J/k B. 10300 J/K C. 3200 J/K D. 1100 J/K E. 960 J/K
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4. Which of the following statements does not correctly represent the second law of thermodynamics? a. Perpetual motion machines do not exist. b. Heat flows spontaneously from high temperature regions to low temperature regions. c. The entropy of the universe tends to decrease. d. Heat cannot be converted to work with 100% efficiency. e. Transporting heat from low temperature regions to high temperature regions requires the application of external work.
Which of the following is NOT correct regarding open or closed systems? Select one: a. Both mass and energy can cross the boundary of a control in an open system O b. no mass can cross the boundary in a closed system O c. A closed system is not a fixed mass system d. heat and work can cross the boundary in a closed system
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One of the consequences of the 2nd Law of Thermodynamics is: A. You can get the same amount of energy out of a process as you put in B. Two bodies are in thermal equilibrium when they have the same temperature C. You can get more energy out of a process than you put in D. The starting and finishing temperature of a cycle must be the same E. You can not get as much energy out of a process as you put in
After eating a 200 g pottle of yoghurt, a person decides to go for a run to burn off the extra energy. The yoghurt provides 5.4 MJ kg−1, and he is able to raise his metabolic rate to 220W while running. How long does he have to run?
4. The first law of thermodynamics states that a. components of a system interact. b. entropy of a closed system always increases. c. closed system always shifts toward disorder or homogeneity. d. Energy is always conserved. 5. According to the second law of thermodynamics, the heat received from a high temperature reservoir by a heat engine operating in a complete cycle a. must be completely converted to work. b. equals the entropy increase. C. converted completely into internal energy. d. cannot be completely converted to work.
5. Which of the following represents the second law of thermodynamics? (Antara berikut, yang manakah mewakili hukum kedua termodinamik?) A The entropy in organisms will be decreasing without the input of energy. (Entropi dalam organisma akan berkurangan tanpa input tenaga.) Whenever energy is transformed by cells, its decreases the entropy of the universe. (Apabila tenaga diubah oleh sel, ja mengurangkan entropi alam semesta.) C In order to maintain high level of organization, cells require a constant input of energy. (Untuk mengekalkan tahap organisasi yang tinggi, sel memerlukan input tenaga yang berterusan.) Heat is a form of energy that can be used by all organism to do work. (Haba adalah satu bentuk tenaga yang boleh digunakan oleh semua organisma untuk melakukan kerja.) ww www w w ww w
The first law of thermodynamics is generally thought to be the least demanding to grasp, as it is an extension of the law of conservation of energy, meaning that energy can be neither created nor destroyed. (a) The variations of properties during phase change processes are best studied and understood with the help of property diagrams. Point out schematically the difference between the P-v diagram in respective of: 1. contracts on freezing. ii. expands on freezing.
a) If an incandescent light bulb requires 100 units of potential energy to deliver only about 12 units of kinetic energy (in the form of incandescent light), then it has a first-law efficiency of: A. 12% B. 88% C. 100% D. 112% E. 188% b) The above example of an incandescent light bulb loses what percentage of potential energy as heat? A. 12% B. 88% C. 100% D. 112% E. 188%