I think it's a pulley and a lever.
<u>C</u> is the correct answer, because energy cannot be created neither destroy. The energy is changing from chemical to from electric to light, and from light to heat.
A pair of equal gravitational forces ... one in each direction ...
exists between every speck of mass in the universe and every
other speck of mass.
The force of thrust is greater than the force if gravity !
Answer found on quizlet !
I believe all of these would be known as specific phobias.
