a person is pulls horizontally with a force of 64n on a 14kg box. there is a force of friction between the box and the floor of 36n. find the acceleration of the box in mls2

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).