153dec2k - December Examination - December 9, 2000 Physics...

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December Examination - December 9, 2000 Physics 153 1. Find the change in the volume, Δ V , of an aluminum sphere ( α = 23 × 10 - 6 / C ) of radius 10cm when it is heated from 0 to 100 C . 2. A person makes a quantity of iced tea by mixing 500g of hot tea (essentially water) with an equal mass of ice at its melting point. If the initial hot tea is a temperature of 90 C , what is the temperature and mass of the remaining ice when the tea and ice reach the same temperature? 3. When the displacement x ( t ) in simple harmonic motion is one-half of the amplitude, what fraction of the total energy is (a) kinetic energy and (b) potential energy. (c) At what displacement, in terms of the amplitude, is the energy of the system half kinetic energy and half potential energy? 4. A sound wave of 40.0cm wavelength enters a tube as shown. What is be the smallest radius r such that a minimum is heard by the detector? r
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This note was uploaded on 07/20/2009 for the course PHYS physics 10 taught by Professor Goatman during the Spring '08 term at The University of British Columbia.

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153dec2k - December Examination - December 9, 2000 Physics...

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