Why were von mayer, joule, kelvin, and von helmholtz able to define conservation of energy in the same way despite using different approaches? each experiment showed the same mathematical relationship. all of the experiments were physics experiments. the scientists worked together in the same lab. the experiments were all performed using the same variables.

answer; ///the above statement is (true); //

answer; i believe the correct answer is (8) eight.

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."