![subject](/tpl/images/cats/fizika.png)
Physics, 30.01.2020 19:56 Ezonthekid
Question 1 if you do 1,000 j of work on a system and remove 500 j of heat from it, what is the change in its internal energy?
a.-1,500 j
b.-500 j
c.1,500 j
d.500 j
question 2 the first law of thermodynamics is related to the conservation of which quantity?
a. matter
b. heat
c. work
d. energy
question 3 which of the following devices does not convert heat energy to mechanical energy?
a. internal combustion engine
b. windmill
c. steam turbine
d. coal-fueled power plant
question 4 which of the following statements correctly describes a heat engine?
a. work is used to transfer thermal energy from a hot reservoir to a cold one.
b. work is done by transferring thermal energy from a cold reservoir to a hot one. c. work is used to transfer thermal energy from a cold reservoir to a hot one.
d. work is done by transferring thermal energy from a hot reservoir to a cold one.
question 5 how much work can be extracted from 5.00 × 104 j of heat when 2.00 × 104 j of heat is exhausted?
a.7.00 × 104 j
b.3.00 × 104 j
c.3.00 × 104 j
d.7.00 × 104 j
question 6 which of the following statements would best describe how to increase the work done by a heat engine?
a. raise the temperature of the exhaust.
b. raise the temperature of the cold reservoir.
c. lower the temperature of the exhaust.
d. lower the temperature of the hot reservoir.
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 05:30
The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 08:30
Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 15:30
This is the number of complete movements of a wave per second.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 19:00
Which of the following list the divisions of the geologic time scale in order from longest to shortest
Answers: 1
You know the right answer?
Question 1 if you do 1,000 j of work on a system and remove 500 j of heat from it, what is the chang...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.01.2020 09:31
![question](/tpl/images/cats/mat.png)
Mathematics, 11.01.2020 09:31
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.01.2020 09:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 11.01.2020 09:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 11.01.2020 09:31
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 11.01.2020 09:31
![question](/tpl/images/cats/mat.png)
Mathematics, 11.01.2020 09:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 11.01.2020 09:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 11.01.2020 09:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 11.01.2020 09:31