102MCATPhysicsAnswers

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Unformatted text preview: 7.4 × 104 N d. 7.4 × 104 Pa 72. Find the maximum compressive force that can be withstood by the bone. a. 1.05 × 105 N b. 1.05 × 105 Pa c. 7.4 × 104 N d. 7.4 × 104 Pa 73. Examine figure 1: find the maximum compressive stress that can be withstood by the bone. a. 1.05 × 105 N b. 17 × 107 Pa c. 7.4 × 104 N d. 11 × 107 Pa 74. Examine figure 1: at which of the 4 points highlighted along the curve does Hooke’s law not apply? a. only i) b. only iii) c. both i) and ii) d. both iii) and iv) Page 11 of 15 ©Prep101 75. Examine figure 1: you conduct a 2 point experiment to determine the youngs modulus of bone. If you test the stress strain realationship on just 2 of the four points highlighted in figure one, which pair of points will give you the lowest youngs modulus? a. i) and ii) b. ii) and iii) c. iii) and iv) d. i) and iv) 78. A stationary 4 kg shell explodes into three peaces. Two of the fragments have a mass of 1 kg each and move along the paths shown with speed 10 m/s. The third fragment moves upwards as shown. What is the speed of the third fragment immediately after explosion? 76. Fire engine approaches a wall at 5.00 m/s while its siren emits a tone whose frequency is 500 Hz. The speed of sound in air is 340 m/s. How many beats per second do the people on the fire engine hear? a. b. c. d. 0.00 15.0 29.0 63.0 a. 0 m/s b. 5 m/s c. 10 m/s d. 20 m/s 77. The water level in a vertical glass tube, of length 1.00 meter, can be adjusted to any position in the tube. A tuning fork vibrating at 660 Hz is held just over the open end of the tube. At what positions of the water level will there be a loud resonance for air at 30°C, given that the speed of sound in air at 30°C is 349 m/s? a. 5 cm b. 7.5 cm c. 10 cm d. 12.5 cm 79. A 1000 kg motorboat traveling at 5 m/s strikes a 5000 kg ship at rest. Both vessels dock together after collision. What will be the speed of both vessels just after the collision? 77. 0.63 m/s 78. 0.73 m/s 79. 0.83 m/s 80. 0.93 m/s 80. A wire has a resistance of 3...
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This note was uploaded on 03/23/2011 for the course CHEM 100 taught by Professor Vallis during the Spring '11 term at Dalhousie.

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