Which situation does jot illustrate kinetic energy? a. a baseball gloveb. a lady walking slowly across the streetc. a hockey puck sliding on the iced. a man running around a trackplz answer this! i will reward 20 points plz plz plz answer and quickley! !

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.

What produces wave a)sound b) heats c)transfer of energy d)vibrations