15)
which statement about matter is correct?
a) in matter, molecules never stop moving.
b) in the solid state, molecules stop moving.
c) pressure and temperature do not affect matter.
d) liquids have a lower level of energy than solids.

An air bubble of volume 20 cm³ is at the bottom of a lake 40 m deep, where the temperature is 4.0°c. the bubble rises to the surface, which is at a temperature of 20°c.take the temperature of the bubble’s air to be the same as that of the surrounding water. just as the bubble reaches the surface, what is its volume?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

How does the entropy of steam compare to the entropy of ice?