In response to high blood sugar levels, the pancreas releases which hormone? (2 points)

endorphins

acetylcholine

serotonin

epinephrine

insulin

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

What does si stand for, when referring to a system of measurement

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm