Resistance is a measure of how well a material conducts an electric charge. would you expect to find a high or low, level of resistance in a copper wire and why?

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.

What is the increase in density of a medium due to wave travel?

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?