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PHY110-Spring21-TakeHomeFinalExam Physics 110 Take Home Final Exam Please write this exam by hand on sheets of paper. As soon as you finish the exam, please take legible photos of all your pages, and email them as attachments (NOT as shared documents) to the designated email address with the appropriate subject line. You may print this page to write on, or use your own paper. Name: _____________________________ Section: ___________ Date: ___________ Please handwrite this statement and sign it. [If you do not do this, you will not receive credit for this exam.] “On my honor, I attest that I will complete this exam following the letter and spirit of the rules with which it is being given.” Signature:____________________________________________________________ You may use any electronic or printed resources you wish during the exam, EXCEPT that you may NOT interact with any other person about the exam, whether electronically, in person, or otherwise. You MUST cite any references, webpages, and any other sources you use or assistance that you get toward completing this exam. Add 10 to the last digit of your phone number: __________ This is X. Add 100 to the last two digits of your phone number: __________ This is Y. Add 1000 to the last three digits of your phone number: _________ This is Z. You will be using the numbers X, Y, and Z for several questions on the exam. The exam is designed to be finished in 90 minutes. You may, however, take as much as three hours to accommodate for any needs or special circumstances. Please write down: The date and time you started work on his exam: _________________________ The date and time you ended work on this exam: _________________________ The questions are given on the next page. Partial credit is available for every question. Good luck! Physics 110 Take Home Final Exam Questions 1. [28 points] In each of following (a) through (g), explain whether or not the sentence makes scientific sense. If it does not, then replace one or more of the underlined words with one or more other words so that the sentence makes scientific sense, and then rewrite the sentence completely. (a) Dark matter and luminous energy together comprise 95% of the universe’s contents. (b) The triplet paradox can be explained with Fermi’s special theory of pseudoscience. (c) Crumpling paper is, like freezing a glass of liquid water, a kind of phase change. (d) Bosons, quarks, protons, and neutrinos are all examples of fermions. (e) Galileo’s first law of motion is that for every action there is an equal and opposite energy. (f) Two consequences of the general theory of relativity include black holes and the Big Bang. (g) Because of nuclear fission, the chemical elements that comprise us were made in bombs. 2. [24 points] In each of following (a) through (j), use all of the listed words in a single sentence that makes scientific sense. Underline each of those words where they appear. You will be assessed on both the sentence construction and the scientific accuracy. (a) voltage, power, current, circuit, [name of a car] (b) pressure, phase, fluid, compressible, gas, [name of a scientist] (c) duality, particle, quantum, uncertainty, Planck, [name of an animal] (d) force, angular, torque, rotation, change, [name of a machine] (e) Higgs, collider, mass, field, particle, [name of a language] (f) wavelength, frequency, acoustic, velocity, light, [name of a singer] 3. [18 points] In questions (a) and (b) show all your calculations and units as applicable. You will be assessed both on your answers and your explanations of how you got them. (a) Use the thermodynamic identity to answer: if the energy of a system increases Y times, its volume stays constant, and its entropy increases X times, then by how many times will its temperature increase or decrease? (b) If, in a nuclear reaction, Z kilograms of matter are converted into energy, how many joules will be produced? (c) Choose any other formula discussed in this class, write a question about it, and solve it. 4. [30 points] In each question (a) through (d) you will write a question appropriate for this exam and then give an answer about 2-3 sentences long. The question cannot be answerable simply by looking up information from a book, website, or other source. You will be assessed both on the question’s quality and the answer's correctness. (a) Write a question about Karl Popper’s ideas about science and falsification. Then answer it. (b) Write a question about the intersection of physics and art. Then answer it. (c) Write a question about Noether’s theorem and supersymmetry. Then answer it. (d) Write a question about any topic covered in this course that has not been directly addressed in an exam question above. Then answer it. (e) Write another question about any other topic covered in this course that has not been directly addressed in an exam question above. Then answer it.