A vertical spring stretches 4.0 cm when a 14-g object is hung from it. The object is replaced with a block of mass 20 g that oscillates up and down in simple harmonic motion. Calculate the period of motion.

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

Work = force × a. work b. energy c. distance d. momentum