Recent content by Lightfuzz

Thanks for the response. So would the following example be correct? (1.5 + 2.03) x 1.1 = 3.53 x 1.1 = 3.883 But according to the addition rule, the addition intermediate step yields a result with 1 decimal place (3.5), which contains 2 significant figures. Therefore when this intermediate...

After losing marks in an exam due to significant figures, I have decided to clear up all my doubts about this concept. But since my teacher hasn't been very helpful, I've decided to post my question here. I understand the rules for significant figures in both single-step...

Hello. I am a high school student wishing to self study physics. I am just seeking some advice on the textbooks that I should use for both physics and the accompanying mathematics. For calculus, I already have some background knowledge based on previous readings of Stewart's book, but I would...

How could I define work and energy qualitatively without relating them to each other?

Maybe it's because of the lateness of the night but I only partially understand. You said that moving one atom will cause the others to move because the trolley is a rigid body. But when did I move this atom? Thanks.

To be more specific, the speed of light is 299,792,458 m/s.

So you're saying that the water continues to spin until it loses energy due to friction because when I stop applying the torque it is confined by the pot and could not move in a straight line. Or are you suggesting that an object remains in circular motion in the absence of a net torque...

Right. But doesn't that violate Newton's First Law?

This question is probably really stupid but I have to ask. I take a pot of water and stir it. This creates a vortex. When I stop stirring, the water continues spinning before slowing to a stop. But Newton's First Law says that "Every body persists in its state of being at rest or of moving...

Again, thanks. My library doesn't seem to have it but I've read his QED lectures. That's why I need websites (video lectures are fine but sometimes my internet connection won't let me access them so text-based lectures would be appreciated).

Thanks everyone. Good point. I'm trying to do this now. And no, I can't access books besides the ones in my library.

I'm watch the MIT ones at the moment.

Hope this is in the right place. I'm 13 years old and I would like to self-study physics. I've study most of calculus and some differential equations and linear algebra. But due to my eagerness and perhaps lack of guidance I have many gaps in my foundations. As I have little access to books...

I've tried that but is there a way to actually solve it without guessing?

How, if possible, could I solve the equation: x''x=((x')^2)/2? Thanks.