3. You turn on the motor in problem 2 and it pulls the weight up 79 cm in 2.5 seconds. a. What is the total amount of mechanical energy expended by the motor in pulling up the weight

explanation:

an enlarged virtual image is the answer

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

are there answer choices to this question? this seems like a question where you have options to choose from.

the answer is to check all of them! they all apply well at least i think so!