![Physics](/tpl/images/cats/fizika.png)
Electromagnetic radiation at temperature t in an enclosure of volume vhas pressure p and energy density u given by и —а т* р 3 1sat" and where a is a constant. (a) write down the ftr and use it to show that as = 4avt2; дт (i) as 4 =-al 3 (ii) ду hint: write e = vu and hence find an expression for de in terms of du and dv; note that uis a function only of t 5 marks] (b) use the results of part (a) to show that the entropy s of the radiation is given by: (i) 4 s = (ii the helmholtz free energy of the radiation is given by f = -pv.
![answer](/tpl/images/cats/otvet.png)
Answers: 3
Other questions on the subject: Physics
![image](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 17:20, issaaamiaaa15
An object thrown vertically upward from the surface of a celestial body at a velocity of 36 m/s reaches a height of sequalsminus0.9tsquaredplus36t meters in t seconds. a. determine the velocity v of the object after t seconds. b. when does the object reach its highest point? c. what is the height of the object at the highest point? d. when does the object strike the ground? e. with what velocity does the object strike the ground? f. on what intervals is the speed increasing?
Answers: 1
![image](/tpl/images/cats/fizika.png)
![image](/tpl/images/cats/fizika.png)
Do you know the correct answer?
Electromagnetic radiation at temperature t in an enclosure of volume vhas pressure p and energy dens...
Questions in other subjects:
![Konu](/tpl/images/cats/en.png)
English, 04.12.2020 02:00
![Konu](/tpl/images/cats/mat.png)
Mathematics, 04.12.2020 02:00
![Konu](/tpl/images/cats/istoriya.png)
History, 04.12.2020 02:00
![Konu](/tpl/images/cats/mat.png)
Mathematics, 04.12.2020 02:00
![Konu](/tpl/images/cats/mat.png)
Mathematics, 04.12.2020 02:00
![Konu](/tpl/images/cats/mat.png)
Mathematics, 04.12.2020 02:00
![Konu](/tpl/images/cats/en.png)
English, 04.12.2020 02:00
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 04.12.2020 02:00