Which of the following is not one of the main ideas of physical science? . a. the universe is very old and very large. b. forces cause changes in motion. c. energy can be transferred from one form to another, but it can never be destroyed. d. one of the main branches of natural science is biology.

We will use a video to study faraday’s law of electromagnetic induction by analyzing the induction that occurs due a coil of copper wire sliding along an air track that passes through an external magnetic field. specifically, we will: examine some of the main principles behind faraday’s law. apply lenz’s law to determine the direction of the induced emf. take measurements of the induced emf from the voltmeter as the coil passes into and out of the external magnetic field. use the horizontal scale provided to determine the speed of the coil. calculate the magnetic field induced in the coil as it passes into and out of the external magnetic field.