You tried to push a broken-down truck until you were exhausted, but it won't budge. Your friend comes by and says that you have not performed any work Is he correct ? Why / why not ?

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5