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Unformatted text preview: PHYS 218, Exam 3 Name: (Last) (First) (Middle) 1. Record 82 as your two-digit exam version number on the scantron form in the field TEST/QUIZ NUMBER. 2. Write your name here and on the scantron form. 3. Record your PUID number in the STUDENT IDENTIFICATION NUMBER field on your scantron form. 4. A numeric answer that is correct to within 1% error is considered correct. 1 1. A suction cup works by virtue of a vacuum that is created within the cup. When the cup is pressed against a flat surface, most of the air is forced out, leaving a region of very low pressure. For a certain cup of area 1.4 cm 2 it is determined that the most massive object it will support on earth has a mass of 0.48 kg. What is the most massive object that the same suction cup will support on the moon where gravity is 1/4 that of earth and where there is zero atmospheric pressure. (a) 0.48 kg (b) 0.12 kg (c) 336 kg (d) 1.92 kg (e) None of the above....
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- Fall '08