Carla applied a force of 35 N to a wheelbarrow full of bricks and moved it 2.5 m. Which of the following can be determined from this information? A. The wheelbarrow supplied 87.5 J of work.
B. The wheelbarrow has a mechanical advantage of 14.
C. The wheelbarrow is 7 percent efficient.
D. The wheelbarrow has 87.5 J of potential energy.

Which of the following is an advantage of using nuclear power plants to produce electricity?

This chart shows the number of soldiers killed according to two different sources. source a is a book written by university professors. source b is from a well-known historical website. in a paragraph, explain why the data presented is different, and evaluate the reliability of each source. which should be used in a school research project, and why?

Plz 20 ! in a citizens elect the president as head of government separately from the legislature? a: parliamentary democracy b: communist state c: presidential democracy d: autocratic state