Physics Final Exam Version 2c 2 Essay

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Physics Final Exam revision c 4/8/15 Directions: It is important that you provide answers in your own words. Please focus only on information from the text/eBook to create your own solutions. Please do not use direct information from an outside source (especially copying and pasting from an “answer” website). Use of direct information from an outside source is against school policy. All answers will be checked for plagiarism. Instances of plagiarism can result in probation or possible dismissal from the school. Grading: Please be sure to follow all guidelines (number of sentences/showing all calculations) and to provide the correct metric units of measure. It is important for you to observe the number of sentences, when…show more content…
Both the greater inside pressure and the greater inside wall area of the larger pipe multiply the total force acting at any place along the length of the larger pipe compared to the same force for the smaller pipe When a 3-kg iron skillet is heated on the stove, it becomes hot very quickly. When 3 kg of water is heated on the stove it heats up slowly. What is the reason for this difference? Support your answer using 3 – 4 complete sentences. In a lab experiment, 45 grams of a metal are heated from 22⁰C to 78⁰C by the addition of 450 J of heat. What is the specific heat of the metal? Show all calculations leading to an answer. A photon of light has a wavelength of about 600 nm (1nm = 1 x 10-9 m). What is the energy of this photon of light? Show all calculations leading to an answer. When a wave crosses a surface at an angle from one medium into another, why does it change directions as it moves across the boundary into the new medium? Use 3 – 4 complete sentences in your own words to explain. Suppose a piano tuner hears 2 beats/second when listening to the combined sound from the tuning fork and the piano note being tuned. After slightly loosening the string, she hears 1 beat/second. Should she continue to loosen the string or tighten it in order to get it “in tune”? Defend your answer with 3 – 4 complete sentences. What conditions must exist for a converging lens to produce a real image of an object that is larger than the object itself?

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