9. The picture below shows the parts of an electric motor. What Is the object in the middle with a coll of wire wrapped around a metal shaft?
O An electromagnet that spins when pushed by magnets.
O An electromagnet that spins when solar energy is converted to mechanical energy.
O A generator which makes the electricity.
OA generator which spins when electricity Is connected to the motor.

Why does a cake rise when you bake it? ♡

Put these processes of the water cycle in the correct order, starting at the point where the water is in the lake: 1. water evaporates into the atmosphere 2. rain, snow, or other precipitation falls 3. water collects into larger bodies of water 4. water vapor condenses into liquid water

When svante arrhenius first proposed his acid-base theory, he was a doctoral candidate. his professors thought his ideas were unfounded. within a decade, the arrhenius theory of acid-base was widely accepted and praised within the scientific world. arrhenius defined acids as compounds having ionizable hydrogen and bases as compounds with ionizable a) barium. b) hydronium. c) hydroxide. d) oxygen.