Recent content by shadow15

How do you solve this? Sand is being poured from a dumping truck and forms a conical pile with its height equal to one third the base diameter. If the truck is emptying at the rate of 720 cubic feet a minute and the outlet is five feet above the ground, how fast is the pile rising as it...

Maybe I need to rephrase my question. Is moving the ball away from its origin the same thing as moving it back to it if you have nothing to compare it to? This is probably a ridiculous or possibly obvious question, but I just can't seem to wrap my head around it.

Before I say anything, I don't really have any experience in physics. But this question just popped into my mind concerning cause and effect and I can't seem to find the answer to it on the web. Here it is...Are cause and effect the same thing if a frame of reference is not present? For...

Thanks for the reply bcrowell! To answer your question, I have only really read one major book on GR and SR by Einstein himself, called Relativity: The Special and the General Theory. In addition to this I have also gathered information off the internet concerning topics in the book I...

Supposing that you could travel faster than the speed of light, what would you see, feel, or experience? Since an object travels slower in time as it approaches light speed, wouldn't the object, if it did travel faster than light, enter into a complete and absolute void because nothing else in...