4. Lucy is driving a motorcycle. After leaving the red light she accelerated to 31 m/s in 8 sec. What is her acceleration?

What is a metal replacement reaction

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.