a boy stands on a scale and finds his weight to be 76.4 lb. if his feet cover an area of 16.9in^2 , how much pressure in lb/in^2 is the boy applying to the scale

What are the three major branches of natural science? • earth and space science, life science, physical science •earth and space science, physical science, chemistry •physical science, life science, chemistry •life science, chemistry, physics

Can you me with this i really appreciate it

Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .