![subject](/tpl/images/cats/fizika.png)
![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, 21.06.2019 23:00
Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 08:00
Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance
Answers: 3
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 11:00
Looking at this barometer, is the air pressure high or low? what type of weather would you expect? high, bad low, bad high, good low, good
Answers: 1
You know the right answer?
The heater has a power output of 3KW how much energy does the heater deliver in one seccond...
Questions
![question](/tpl/images/cats/en.png)
English, 21.02.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 21.02.2021 19:20
![question](/tpl/images/cats/en.png)
English, 21.02.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 21.02.2021 19:20
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.02.2021 19:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.02.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 21.02.2021 19:20
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.02.2021 19:20
![question](/tpl/images/cats/en.png)
English, 21.02.2021 19:20
![question](/tpl/images/cats/geografiya.png)
Geography, 21.02.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 21.02.2021 19:20
![question](/tpl/images/cats/en.png)
English, 21.02.2021 19:20