The bliss you feel in the early stages of a relationship when you are infatuated is due to significantly elevated levels of dopamine and norepinephrine in your brain a favorable line-up of the moon and the stars the novelty of the situation a. & c.

In a bumper car arena, two cars of equal mass are heading straight toward each other. the orange one is traveling at a speed of 5 meters per second. the green one is traveling at a speed of 2 meters per second. which of the forces most affects the motion of the bumper cars after they collide? a) gravity b) friction c) the other car d) wind resistance

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Diamond will scratch quartz. true or false