What causes an electric current in a wire?
a.
electric fields cause atoms to move in the wire.
b.
electrons flow because of electrical attraction and repulsion.
c.
electrons move because of heat.
d.
electrons build up in the wire and create a charge

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s

Which is an advantage of subdividing science into different areas?