Physics_10_-_Fall_2004_-_Muller_-_Midterm_2 - Physics 10...

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Physics 10 Midterm exam 1 Part A – Essay Questions November 18, 2004 Last name____________________ First name_________________SID___________ Essay questions (20 pts): pick one and only one to answer; circle the one you choose. Write a page or two (or whatever is appropriate) on this sheet. Cover the important points in a clear and concise manner – as if you have only a few minutes to tell the President, your roommate, or your parent, what that person needs to know. Clear, effective writing is important. 1. Magnets make nice toys, but magnetism is also indispensable for modern life. There are numerous uses of magnetism in applications where many people in the general public do not even know that it is involved. Describe several of these, and say a few words about each one to show what the magnetism does in each case. 2. Infrared radiation is also called IR. Describe how it is different from visible light. What emits IR? Can animals use it? Explain how emission of IR sometimes “wastes” energy. Give examples showing how IR ia used in modern technology.
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