Which student is doing work? Amy exerts a 55 N force to hold up a bowling ball as she walks toward the bowling lane. Jim exerts a 65 N force to hold a ball while spinning in a circle. Sara exerts a 20 N force forward on a bowling ball that rolls forward 1.0 m. Jane exerts a 45 N force upward while holding a ball above the groun

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

One number is said to be an "order of magnitude" larger than another number if choose one: a. it is 10 times larger. b. it is 5 times larger. c. it is 3 times larger. d. it is 100 times larger. e. it is 2 times larger.

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up