Bettina spoke into a microphone during the school play to increase the sound of her voice so the audience could hear her speak. the loudness of bettina’s voice was changed by what type of energy?

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

What does a complete balanced chemical equation include? a. exothermic coefficients b. endothermic coefficients c. valence electrons d. molar coefficients