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PHYS 216 Final Exam (Devry)
http://www.fres-courses.com/product/phys-216-final-exam-devry |
PHYS 216 Final Exam (Devry) 1. (TCO 1) The following conversion equivalents are given: 2. (TCO 1) A baseball is hit with a bat and, as a result, its direction is completely reversed and its speed is doubled. If the actual contact with the bat lasts 0.45 s, what is the ratio of the acceleration to the original velocity? 3. (TCO 1) You walk 55 m to the north, then turn 60° to your right and walk another 45 m. How far are you from where you originally started? 4. (TCO 2) It takes 4500 N to accelerate a car at a rate of 3.42 m/ s2. What is the mass of the car? 5. (TCO 3) Through what angle in degrees does a 33 rpm record turn in 0.25 s? 6. (TCO 4) A 95 N force exerted at the end of a 0.50 m long torque wrench gives rise to a torque of 15 N • m. What is the angle (assumed to be less than 90°) between the wrench handle and the direction of the applied force? 7. (TCO 5) A rotating merry-go-round has an angular velocity of 0.184 rad/s. Find the period of rotation of the merry-go-round 8. (TCO 5) The speed of sound in steel is 5000 m/s. What is the wavelength of a sound wave of frequency 660 Hz in steel? 9. (TCO 5) A string, 0.15 m long, vibrating in the n = 5 harmonic, excites an open pipe, 0.82 m long, into second overtone resonance. The speed of sound in air is 345 m/s. The distance between a node and an adjacent antinode, in the string, in mm, is closest to: 10. (TCO 6) A golf ball of mass 0.050 kg is at rest on the tee and has a velocity of 102 m/s immediately after being struck. If the club and ball were in contact for 0.81 ms, what is the average force exerted on the ball? 11. (TCO 6) Three solid, uniform flywheels, each of mass 65.0 kg and radius 1.47 m, rotate independently around a common axis. Two of the flywheels rotate in one direction at 3.83 rad/s; the other rotates in the opposite direction at 3.42 rad/s. Calculate the magnitude of the net angular momentum of the system. 12. (TCO 7) A car drives 5.0 km north, then 7.3 km east, then 3.4 km northeast, all at a constant velocity. If the car had to perform 2.6 × 106 J of work during this trip, what was the magnitude of the average frictional force on the car? 13. (TCO 7) You have a flask of liquid nitrogen at a temperature of -243°C. You then heat the nitrogen until its temperature is doubled. What is the new temperature? 14. (TCO 8) A hydrogen atom and a neutron fuse to form deuterium. If the energy released is 3.6 x 10-13 J, what is the mass of the deuterium? Take the H atom nucleus as a single proton 15. (TCO 8) An ancient rock is found to contain 40Ar gas, indicating that 77% of the 40K in the rock has decayed since the rock solidified. Any argon would have boiled out of liquid rock. How long ago did the rock solidify? The half-life of 40K is 1.25 billion years.
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PHYS 216 Final Exam (Devry)
http://www.fres-courses.com/product/phys-216-final-exam-devry |
PHYS 216 Final Exam (Devry) 1. (TCO 1) The following conversion equivalents are given: 2. (TCO 1) A baseball is hit with a bat and, as a result, its direction is completely reversed and its speed is doubled. If the actual contact with the bat lasts 0.45 s, what is the ratio of the acceleration to the original velocity? 3. (TCO 1) You walk 55 m to the north, then turn 60° to your right and walk another 45 m. How far are you from where you originally started? 4. (TCO 2) It takes 4500 N to accelerate a car at a rate of 3.42 m/ s2. What is the mass of the car? 5. (TCO 3) Through what angle in degrees does a 33 rpm record turn in 0.25 s? 6. (TCO 4) A 95 N force exerted at the end of a 0.50 m long torque wrench gives rise to a torque of 15 N • m. What is the angle (assumed to be less than 90°) between the wrench handle and the direction of the applied force? 7. (TCO 5) A rotating merry-go-round has an angular velocity of 0.184 rad/s. Find the period of rotation of the merry-go-round 8. (TCO 5) The speed of sound in steel is 5000 m/s. What is the wavelength of a sound wave of frequency 660 Hz in steel? 9. (TCO 5) A string, 0.15 m long, vibrating in the n = 5 harmonic, excites an open pipe, 0.82 m long, into second overtone resonance. The speed of sound in air is 345 m/s. The distance between a node and an adjacent antinode, in the string, in mm, is closest to: 10. (TCO 6) A golf ball of mass 0.050 kg is at rest on the tee and has a velocity of 102 m/s immediately after being struck. If the club and ball were in contact for 0.81 ms, what is the average force exerted on the ball? 11. (TCO 6) Three solid, uniform flywheels, each of mass 65.0 kg and radius 1.47 m, rotate independently around a common axis. Two of the flywheels rotate in one direction at 3.83 rad/s; the other rotates in the opposite direction at 3.42 rad/s. Calculate the magnitude of the net angular momentum of the system. 12. (TCO 7) A car drives 5.0 km north, then 7.3 km east, then 3.4 km northeast, all at a constant velocity. If the car had to perform 2.6 × 106 J of work during this trip, what was the magnitude of the average frictional force on the car? 13. (TCO 7) You have a flask of liquid nitrogen at a temperature of -243°C. You then heat the nitrogen until its temperature is doubled. What is the new temperature? 14. (TCO 8) A hydrogen atom and a neutron fuse to form deuterium. If the energy released is 3.6 x 10-13 J, what is the mass of the deuterium? Take the H atom nucleus as a single proton 15. (TCO 8) An ancient rock is found to contain 40Ar gas, indicating that 77% of the 40K in the rock has decayed since the rock solidified. Any argon would have boiled out of liquid rock. How long ago did the rock solidify? The half-life of 40K is 1.25 billion years.
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PHYS 216 Final Exam (Devry)
http://www.fres-courses.com/product/phys-216-final-exam-devry |
PHYS 216 Final Exam (Devry) 1. (TCO 1) The following conversion equivalents are given: 2. (TCO 1) A baseball is hit with a bat and, as a result, its direction is completely reversed and its speed is doubled. If the actual contact with the bat lasts 0.45 s, what is the ratio of the acceleration to the original velocity? 3. (TCO 1) You walk 55 m to the north, then turn 60° to your right and walk another 45 m. How far are you from where you originally started? 4. (TCO 2) It takes 4500 N to accelerate a car at a rate of 3.42 m/ s2. What is the mass of the car? 5. (TCO 3) Through what angle in degrees does a 33 rpm record turn in 0.25 s? 6. (TCO 4) A 95 N force exerted at the end of a 0.50 m long torque wrench gives rise to a torque of 15 N • m. What is the angle (assumed to be less than 90°) between the wrench handle and the direction of the applied force? 7. (TCO 5) A rotating merry-go-round has an angular velocity of 0.184 rad/s. Find the period of rotation of the merry-go-round 8. (TCO 5) The speed of sound in steel is 5000 m/s. What is the wavelength of a sound wave of frequency 660 Hz in steel? 9. (TCO 5) A string, 0.15 m long, vibrating in the n = 5 harmonic, excites an open pipe, 0.82 m long, into second overtone resonance. The speed of sound in air is 345 m/s. The distance between a node and an adjacent antinode, in the string, in mm, is closest to: 10. (TCO 6) A golf ball of mass 0.050 kg is at rest on the tee and has a velocity of 102 m/s immediately after being struck. If the club and ball were in contact for 0.81 ms, what is the average force exerted on the ball? 11. (TCO 6) Three solid, uniform flywheels, each of mass 65.0 kg and radius 1.47 m, rotate independently around a common axis. Two of the flywheels rotate in one direction at 3.83 rad/s; the other rotates in the opposite direction at 3.42 rad/s. Calculate the magnitude of the net angular momentum of the system. 12. (TCO 7) A car drives 5.0 km north, then 7.3 km east, then 3.4 km northeast, all at a constant velocity. If the car had to perform 2.6 × 106 J of work during this trip, what was the magnitude of the average frictional force on the car? 13. (TCO 7) You have a flask of liquid nitrogen at a temperature of -243°C. You then heat the nitrogen until its temperature is doubled. What is the new temperature? 14. (TCO 8) A hydrogen atom and a neutron fuse to form deuterium. If the energy released is 3.6 x 10-13 J, what is the mass of the deuterium? Take the H atom nucleus as a single proton 15. (TCO 8) An ancient rock is found to contain 40Ar gas, indicating that 77% of the 40K in the rock has decayed since the rock solidified. Any argon would have boiled out of liquid rock. How long ago did the rock solidify? The half-life of 40K is 1.25 billion years.
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