The upward force that a fluid exerts on an object is called the buoyant force. how is the buoyant force similar to the frictional force?
a.
both buoyant and frictional forces can act over short distances.
b.
both buoyant and frictional forces do not involve solids.
c.
both buoyant and frictional forces act only with contact.
d.
both buoyant and frictional forces push objects upward.

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

In a system, when potential energy decreases, then entropy also decreases. true false

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.