Why is physics used to study stars? A. Stars are interesting.
O B. Stars are circular.
O C. Stars are useful.
O D. Stars are made of matter.

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell