Astudent stands on a bathroom scale in an elevator at rest on the 64th floor of a building. the scale reads 836 n.
a) as the elevator moves up, the scale reading increases to 935 n, then decreases back to 836 n. find the acceleration of the elevator.
b) as the elevator approaches the 74th floor, the scale reading drops as low as 782 n. what is the acceleration of the elevator?

Hunter is in lab. he clears a spot on his lab bench to start working. he also puts his lab coat and goggles on. he then identifies where all of the safety equipment is. he notices his station is next to the fume hood, which ventilates the chemicals stored there. the noise of the fume hood was bothersome, so hunter turned it off. which could be an error in his set-up? he should not turn off the fume hood.  he should wait to put on his coat until after the directions are given.  he should wait to put on his goggles until after the directions are given.  he should not sit next to the fume hood.