Recent content by wakefield

When the marble is dropped its initial velocity is the same as the elevator's velocity upwards.

You'll need to know various techniques of integration and it would help to be familiar with sequences and series already.

Since you found the magnitude of the net force on the boat, to get the magnitude of the acceleration now you can apply Newton's second law, F=ma. To find the direction of the force and the acceleration try drawing the resultant vector of the two force vectors.

Sure it is. It's not like a direct substitution but it's the right idea.

Try writing |x-3||x+3|<\epsilon as |x-3|<\frac{\epsilon}{|x+3|} and then substituting that for \delta .

Think about this, if you have two wires connected in series but they don't have the same current flowing through them, what happens at the point where they meet? If the current is higher in the first wire? In the second?

I finished the two semester calculus based physics sequence (using Halliday, Resnick, and Walker) at my school last semester as well as the three semester calculus sequence (although we didn't cover line and surface integrals or the theorems of Green and Stokes so I had to learn that on my own)...