Recent content by Nikhil Rajagopalan

The given scattering angle is 50 degrees and the selected accelerating voltage is 54 volts. If we are looking for the first maximum at a range exactly around 50 degrees of scattering angle, from the calculation, the accelerating voltage should be 54 volts. And beyond and below 54 volts, the...

In the experiment, a pronounced diffraction pattern is observed at an accelerating voltage of 54 volts. Beyond and below 54 volts, the peaks are not pronounced. What is the significance of 54 volts ? Why does the peak become less high below and above the specific value of accelerating voltage.

Thank you, @russ_watters and @kuruman , I could not have asked for a better explanation. The explanation I feel fitting is that, for a combination of initial and final states (P,V,T ) and (P/2, 2V, T) , a combination of heat supply and controlled reduction of gauge pressure is the way to execute...

The idea of gauge pressure helps better. So, in fact what i perceive is that, for the above, slow controlled isothermal expansion to happen, a supply of heat alone will not work. From the post which was cut out earlier, i believe the process should be carried out by continuously and gradually...

Thank you, The example was described just as i stated. In fact the explanation was comparing it with a free expansion from 2 liters to 5 liters by bursting a membrane inside the sealed chamber.

Thank you, My question is based on an example from a university physics book which explains how heat absorbed is path dependent. The example is of a cylinder and a piston, initially at 2 liters of volume subjected to 'slow, controlled isothermal expansion' to 5 liters at 300K temperature. It...

Thank you for highlighting the error. If the piston is pushing against the atmospheric pressure in both cases, will the question be valid?

Dear experts, Considering a cylinder and a piston where the volume is V and the pressure is P and the temperature being T, the gas is slowly allowed to expand accepting heat keeping the temperature constant at T to twice the volume. The pressure according to the ideal gas equation should go...

Dear Experts, While going through the explanation why heat absorbed by a gas is path dependent, there were two examples of comparison. 1. A gaseous volume of 2 liters expanding slowly to 4 liters , supplying heat from a heater keeping the temperature of the gas constant at 300K. 2. A gas allowed...

Dear Experts, We compute Cv for gases using the idea of equipartition principle and degrees of freedom. In case of a diatomic molecule, there are minimum 3 degrees of freedom (at very low temperatures) and maximum 6 degrees of freedom one of them being vibrational (at high temperatures. Does it...

Thank you Dale. That was very helpful.

Dear Experts, I have read from various sources that the temperature of a gas is related to the "average translational kinetic energy" of a molecule of gas. When there are molecules that support motion other than translational ,which may also have rotational and vibrational motion, How does those...

For a wave A sin ( kx - ωt) and a wave A sin ( kx + ωt) traveling opposite to each other, on evaluating by applying superposition principle , the resultant displacement function is 2A sin ( kx ) cos (ωt) . For different Node Anti-node configurations we calculate natural frequencies of the...

The equation I tried was from applying Faraday's Law to the LCR circuit. i - Current in the circuit. Q - Maximum charge in capacitor q - Charge in the capacitor at any instant i = d/dt (Q-q) According to Faraday's Law, iR - q/C = Einduced iR -...

Is it because, a lesser I max cannot store as much charge in the capacitor as it used to have. making the next charging quarter cycle less taller and this continues.