What The total amount of energy and mass in the universe

What type of light does this light bulb produce most (i. e. at what wavelength does the spectrum have maximum intensity)?

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

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational