Recent content by NTesla

Appreciate you help. However, the links that you posted above, in your reply, answers none of the 3 questions that I've posted above.

Pic 1: Pic 2: Pic 3: I'm trying to understand how motor of ceiling fan works. I have been scouring the internet since last 3 days. Watched a lot of youtube videos about it. Read quite a lot of websites related to single phase induction motors. Also read relevant chapters in 2 books...

Yes, you are right. I did mean to write that I thought that the specific heat capacity of water is more than that of ice. But by mistake, ended up writing the opposite. But, now I'm wondering why is it so. Why is the specific heat capacity of ice lower than that of water. It could possibly be...

I've tried to figure out the why of the question. But all i can think of is, somehow, the specific heat capacity of ice is more than the specific heat capacity of liquid water, but how and why is it so, that i'm not sure of.

Thank you @haruspex, @Steve4Physics. Your comment were helpful. Much appreciated.

Yes d is not constant. But same can also be said about Capacitance and voltage. The way it has been detailed in the book, capacitance and voltage has been taken as constant. The way the energy stored has been calculated in the book, is it wrong ?

F = QE, is the force experienced by one plate of capacitor by the another plate. Q is the magnitude of charge on the plate which is experiencing the force. E is the electric field between the plates of the capacitor. Q = CV is the usual expression for the charge, capacitance and the voltage...

I've mentioned the problem that i'm facing in the question that I've posted. Kindly go through it.

Thank you for your detailed response. It's sincerely very much appreciated. However, I had figured where I was going wrong after reading jbriggs444's answer in post #2. And there is official answer with numerical value. Here's the screenshot of the official answer. It was interesting to see...

The official answer was 5080 seconds, approximately 85 minutes. I wasn't aware, that while posting questions, one also needs to post the official answer too. Also, answer is not part of the problem statement, so leaving it must NOT guarantee that anyone will be less helpful. How is helping...

@jbriggs444 Thanks for your help. I understand that putting numerical values was not required in the question. However, I was trying to match the official answer. Official answer has numerical value.

I'm trying to solve it by 2 methods(screenshot below). However, I'm getting 2 different answers. I'm not able to find out the error in method 1. Method 2 gives the answer correctly. Kindly help. P. S: If the pics are not clearly visible enough, kindly let me know. I'll try to either improve the...

The gist of Pound Rebka experiment that I understood, is that in a gravitational potential well, the energy of photon increases if it falls down the well, and vice a versa if it comes up. Is the phenomenon of increase in energy of photon in a gravitational potential well, same as increase in...

@kuruman, @Hill, @anuttarasammyak: Appreciate your kind help in resolving the concept. However, a followup question is coming to mind, that in red shift of light coming from distant galaxy, the light is travelling in vacuum. The light's wavelength increases due to expansion of spacetime itself...

What's your opinion on the statements made by Dr. Feynman and Dr. Verma, that it's wavelength on which the colour depends.