If you want to know if you will be speaking to a captive audience, what the setup of the room will be, if a microphone is needed and available, or if there will be a computer and projector in the room, you would need to perform a:

~kinetic ~potential

explanation:

kinetic and potential energies would be types of mechanical energies.

u idek                                                                                                                                               /

answer; (place);

answerthe available supply of sunshine, allows people to grow and sell, (especially oranges);