Which term does the phrase "an explanation of a natural phenomenon that is supported by facts gathered from many scientific investigations" best describe?

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

The energy equivalent of the rest mass of an electron is