We know that the law of conservation of energy states that energy can not be created or destroyed. it only changes form. consider this energy transformation diagram. assume that the energy input in this case is chemical potential energy and the useful energy output is kinetic energy, specifically a small fan to keep you cool. the diagram also shows how to calculate the efficiency of the fan. if the law of conservation of energy holds true, explain why the efficiency of the fan is not 100%.
a) no machine is ever 100% efficient; some energy is not transformed.
b) some of the chemical potential energy is destroyed during the energy transformation.
c) some of the chemical potential energy is transformed into heat energy as well as kinetic energy.
d) conservation of energy also implies that some of the chemical potential energy is conserved or not used to run the fan.
Answers: 1
Other questions on the subject: Chemistry
Chemistry, 22.06.2019 15:00, Zagorodniypolina5
20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?
Answers: 2
Chemistry, 23.06.2019 12:00, samantha9430
Which of the following involves only abiotic factors? a. a large rock being weathered by wind and rain b. an otter using a stone to break open a sea urchin c. a spider building a web in the corner of a building d. a pine tree absorbing light from the sun
Answers: 1
Chemistry, 23.06.2019 15:30, robert7248
K12 chemistry unit assessment: chemical bonding, electrostatic forces in ionic bonds hold which of the following together? 1. he atoms in helium gas 2.na+ and br- in nabr 3. fe atoms and localized electrons in iron
Answers: 1
Do you know the correct answer?
We know that the law of conservation of energy states that energy can not be created or destroyed. i...
Questions in other subjects:
History, 25.02.2021 21:20
Mathematics, 25.02.2021 21:20
Mathematics, 25.02.2021 21:20
Geography, 25.02.2021 21:20
