If there are 4.448 newtons in a pound, what is the weight of the toy-filled truck in newtons?

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

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

Which system of units is used by only a small number of countries in the world, including the u.s.