finalb

finalb - Exam Name MULTIPLE CHOICE Choose the one...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Advertisement for a certain small car claim that it floats in water. The car's mass is 900kg and its interior volume is 3.0 cubic meters. Water gradually leaks in and displaces the air in the car. What fraction of the interior volume is filled with water when the car sinks? A) 30% B) 50% C) 70% D) 90% E) 10% 1) 2) What's the closest wavelength to 480nm that can still be resolved as a seperate wavelength using a grating with 1000 gratings across 1cm. 2) 3) "Vibrato" in a violin is produced by sliding the finger back and forth along a vibrating string. The G-string on a particular violin measures 30cm between bridge and its far end and is clamped rigidly at both points. It's fundamental frequency is 197Hz. How far from the ("nut") end should a violinist place a finger so that the G-string plays the note A (440Hz)? 3) 4) A sealed tank containing water (density 1g/cubic-cm) to a height of 11m also contains air above the water at a pressure of 3atm (1atm = 100,000Pa). Water flows out at the bottom through a small hole. What's the speed of the water flowing out? 4) 5) An aerosol of whipped cream is pressurized at 440 kPa when it's refrigerated at 3 degree Celsius. The can warns against temperatures in excess of 50 degree Celsius. What is the maximum safe pressure for the can? A) 500 kPa B) 600 kPa C) 1000 kPa D) 4000 kPa E) 7000 kPa 5)

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