Recent content by Effect

A fast response to this would be appreciated :rolleyes:

Homework Statement The diagram shows the molar heat capacity of an ideal diatomic gas and the number of degrees of freedom at different temperatures. Explain why there are 3 discrete plateaus and why the curve is smooth and leaning between them. Homework Equations - The Attempt at a Solution...

You are correct, I must have made a careless mistake somewhere. Thank you for your assistance!

##\frac{1.03*10^{13}}{2\pi}=1.64*10^{12}## Still not correct, correct answer should be ##5.2*10^{12}##

##E_{rotational}=1/2 I\omega^2 \Leftrightarrow \omega=\sqrt{\frac{2E}{I}} \\ I=1/2mr^2## $$\Rightarrow \omega=\sqrt{\frac{4E}{mr^2}}$$ ##\Rightarrow \omega=\sqrt{\frac{4*0.0151*1.606*10^{-19}}{1.66*10^{-27}*(7.41*10^{-11})^2}}=1.03*10^{13}##

Do you mean rotational dynamics $$E_{rotational}=1/2 I\omega^2$$ This? I still don't get the right answer.

Homework Statement The distance between the both nucleons in the H2 molecule is 0.0741 nm The energy for the 3 lowest radiation levels of the molecule are: ##E_{0}=0 \\ E_{1}=0.0151 eV \\ E_{2}=0.0453 eV## How many revolutions per second does the molecule rotate with in the different states...

I want to understand how this circuit demonstrating the photoelectric effect works. Please see attached picture. On the picture we see light entering the cathode C, which, if the light is above the threshold frequency can eject electrons from the cathode, which hits the anode A, creating a...

So if we start with question a) to calculate P = Q/t we can use that Q=m*c*ΔT so for for the 10 liters of water in the hot reservoir we get P=10*4186*25.8/1616=668 W. However it says the answer for a) is 667 W. Any idea why the difference? For question b) we have Vf = Pout / Pin where Pout =...

Ah yes. Of course. Thank you!

Homework Statement The highest theoretical efficiency of an engine is e=(TH-TC)/TH where TH is the highest and TC is the lowest temperature during the circuit process. In a test car with a stirling engine the highest temperature during the circuit process is 700 °C and the lowest temperature...

Ah yes, of course. :redface: Thanks.

Homework Statement An engine goes through a "square" circuit process (is btw "circuit process" this the correct term in English?) according to the diagram below: a) How much work is performed by the engine during one revolution in the circuit process? b) What effect does the engine...