How are reflecting telescopes similar to devices that produce laser light? both use crystals to produce a beam of light. both have convex lenses that magnify objects. both have concave lenses that magnify objects. both use mirrors to reflect a beam of light.

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and

If forces acting on an object are unbalanced. true or false