Which of the following statements is false? a. magnets can be demagnetized by cooling. b. the flow of electricity can generate a magnetic field. c. the movement of a magnet can generate electricity.

Astudent looks at ocean waves coming into the beach. an ocean wave with more energy will a) have a greater height. b) have a greater period. c) travel toward the beach faster. d) strike the beach with greater frequency.

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What can you increase the strength of an electromagnet by