All Questions
3
questions
-1
votes
2
answers
557
views
What does $d$ stand for in this formula?
Context: I am building a tennis ball machine and am having trouble interpreting the following formula for the flight path of the ball. I know all of the other values in the formula but the source I am ...
5
votes
2
answers
301
views
Clarify definite integration of differentials in physics problems
I realized there is an issue with integration in physics problems that I had always taken for granted.
As an example, the relation between work and potential energy is
$dW=-dU_p$
when integrating ...
- 405
0
votes
3
answers
561
views
What is meant by $dy/y$?
Consider the language in the following example:
What is meant by $dg$ and $dR$, and also by $dg/g$? Why does $dR/R=-2/100$ (negative for shrinks)? Is $4\%$ unity change? I mean $dg/g=4\%$ or $dg=...
- 93