A 10.0-kg block is released from point A in Figure 3. The track is frictionless except for the portion between points B and C , which has a length of 6.00 m. The block travels
down the track, hits a spring of force constant 2250 N/m, and compresses the spring
0.300 m from its equilibrium position before coming to rest momentarily. Determine the
coefficient of kinetic friction between the block and the rough surface between B and C.

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.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Diamond will scratch quartz. true or false