a block of wood is pulled by a horizontal string across a rough surface at a constant velocity with a force of 20 n. the coefficient of kinetic friction between the surfaces is 0.3. the force of friction is

Keep your choice of a major there is probably no single correct choice. a ) to yourself. b) in perspective. c) based solely on the expectations of others. d) all of the answer choices are correct.

Luminous objects such as flashlights emit light that we can see. how do we see an object that isn’t luminous? a. the object emits light that reaches our eyes. b. light reflects off the object and reaches our eyes. c. light passes through the object uninterrupted. d. light is fully absorbed by the object. e. we can’t see an object that isn’t luminous.

Your data will you choose that you can use in your planning. a. evidence-based practices b. strategies others have used c. new and innovative strategies d. strategies recommended by family members