Arailroad diesel engine weighs four times as much as a freight car. if the diesel engine coasts at 24 km/h into a freight car that is at rest, how fast do the two coast after they couple?

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

Why is metal often used for cooking pan?

What is the magnitude of the resultant vector round your answer to the nearest tenth