It is important that engineers build a structure that is safe. what do they look for when testing their designs?

failure points
fair tests
prototypes
variables

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

The slope of a velocity time graph over any interval of time gives the during that interval

Compare the patterns of the two waves shown in the image. which statement is true about these waves?