After 2 seconds the stone will have fallen a total of 19.6m how far will the stone have fallen after 5 seconds

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

Which is the most accurate name for the covalent compound p2o3?

Which wave is the result of amplification and produces a louder sound