Please guys i need help in this
...
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/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 23:30
If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 06:10
Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 06:20
Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 22:50
The illuminance of a surface varies inversely with the square of its distance from the light source. if the illuminance of a surface is 120 lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30 lumens per square meter?
Answers: 3
You know the right answer?
Questions
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 16.07.2019 17:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 16.07.2019 17:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/health.png)
Health, 16.07.2019 17:50
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/health.png)
Health, 16.07.2019 17:50
![question](/tpl/images/cats/mat.png)
Mathematics, 16.07.2019 17:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 16.07.2019 17:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mir.png)
![question](/tpl/images/cats/en.png)
English, 16.07.2019 17:50
![question](/tpl/images/cats/mat.png)
Mathematics, 16.07.2019 17:50