![subject](/tpl/images/cats/fizika.png)
Physics, 17.07.2019 09:30 alexkrol10
Aheat engine uses thermal energy that flows from a heat source with a temperature of 325 k to a cold sink, which has a temperature of 135 k. what is the efficiency of the heat engine? the answer should have three significant figures.
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 03:50
Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 04:10
Calculate the work done by an external agent during an isothermal compression of 1.00 mol of oxygen from a volume of 22.4 l at 10∘c and 1.0 atm pressure to 16.8l
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 10:30
Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 15:50
Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?
Answers: 1
You know the right answer?
Aheat engine uses thermal energy that flows from a heat source with a temperature of 325 k to a cold...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 06.03.2020 02:22
![question](/tpl/images/cats/mat.png)
Mathematics, 06.03.2020 02:22
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/en.png)
English, 06.03.2020 02:23
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.03.2020 02:23
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/es.png)
Spanish, 06.03.2020 02:23
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.03.2020 02:23
![question](/tpl/images/cats/ekonomika.png)
Business, 06.03.2020 02:23
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.03.2020 02:24
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 06.03.2020 02:24
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/himiya.png)