Which of these is an advantage of using models to study tectonic plate movements? Actual plate movements can be stopped.
Actual plate movements can be made less frequent.
Models of the exact material as original can be made.
Observations can be made from outside the system.
I need an actually correct answer not some guessing game

Work = force × a. work b. energy c. distance d. momentum

Hen a gfci receptacle device is installed on a 20-ampere branch circuit (12 awg copper), what is the minimum volume allowance (in cubic inches) required for conductor fill for each conductor in the outlet box?

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?