Apendulum has 721 j of potential energy at the highest point of its swing. how much kinetic energy will it have at the bottom of its swing?

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver