What does meaningful learning require the learner to do? 1.Relate new knowledge to what is already known 2.Use rote learning strategies to memorize facts 3.Eliminate prior schema 4.Teach others

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1