SARAHM

This page lists questions and answers that were posted by visitors named SARAHM.

Questions

The following questions were asked by visitors named SARAHM.

A certain length of wire has a resistance of 21 ohms. This wire is melted down and from the same volume of material a new wire is formed that is three times longer than the original wire. What is the resistance of a new wire? ***PLEASE SHOW ALL WORK!!!

Answers

The following answers were posted by visitors named SARAHM.

I'm sorry, I don't understand how to do it. Could you please explain how to do both parts?

when I find the tension in the thread, do I plug in the mass of the ball in the equation? Also,to find the charge, wouldn't the angle be 36 degrees so why would I use .25sin18 rather than .25sin36? Thirdly, for the part about kq^2/r... what would be the q...

What do I plug in for V and for R?