10 points urgent due in 10

What wave properties are involved in a glass knocking over?

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

What is the equation for electrical work?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration