How did they generate alpha particles in rutherford's gold foil experiment?

The rules of engagement (roe) working group is often used to (select all that apply.)

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.

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both