Obviously, from the point view of efficiency, the higher the EER the better, but a higher EER is typically accom higher price. Consider two 12,000-Btu air conditioners, one with an EER of 7.8 and the other with a EER of 10. The difference in price is about 70 dollars. Assuming that the air conditioner will be operated for 6 hours daily during a period of 4 months every year, how long will it take to break even financially if you purchase the more expensive unit? Take the electricity to be 0.10dollar/(kilowatt. Hour). a) Less than a year b) about two year c) about three year d) about four year e) more than five years

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.