College Physics: Explore And Apply, Volume 2 (2nd Edition)

2nd Edition

ISBN: 9780134862910

Author: Eugenia Etkina, Gorazd Planinsic, Alan Van Heuvelen, Gorzad Planinsic

Publisher: PEARSON

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Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –

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Textbook Question

Chapter 2, Problem 30P

* Olympic champion swimmer Michael Phelps swam at an average speed of 2.01 m/s during the first half of the time needed to complete a race. What was his average swimming speed during the second half of the race if he tied the record. Which was at an average speed of 2.05 m/s?

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Chapter 2, Problem 29P

Chapter 2, Problem 31P

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What is the current, in amps, across a conductor that has a resistance of10 Ω and a voltage of 20 V? 2. A conductor draws a current of 100 A and a resistance of 5 Ω. What is thevoltageacross the conductor? 3. What is the resistance, in ohm’s, of a conductor that has a voltage of 80 kVand acurrent of 200 mA? 4. An x-ray imaging system that draws a current of 90 A is supplied with 220V. What is the power consumed? 5. An x-ray is produced using 800 mA and 100 kV. What is the powerconsumed in kilowatts?

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Chapter 2 Solutions

College Physics: Explore And Apply, Volume 2 (2nd Edition)

Ch. 2 - Which group of quantities below consists only of...Ch. 2 - Which of the following are examples of time...Ch. 2 - A student said. The displacement between my dorm...Ch. 2 - An object moves so that its position depends on...Ch. 2 - 6. Choose the correct approximate...Ch. 2 - Figure Q2.7b shows the position-versus-time graph...Ch. 2 - Oilver takes two identical marbles and drops the...Ch. 2 - 9. Your car is traveling west at 12 m/s. A...Ch. 2 - Which velocity-versus-time graph in Figure Q2.10...Ch. 2 - 11. Azra wants to determine the average speed of...Ch. 2 - A sandbag hangs from a rope attached to a rising...Ch. 2 - An apple falls from a tree. It hits the ground at...Ch. 2 - 14. You have two small metal balls. You drop the...Ch. 2 - Which of the graphs in Figure Q2.15 represent the...Ch. 2 - 16. You throw a small ball upward and notice the...Ch. 2 - Figure Q2.17 shows vectors E,F, and G. Draw the...Ch. 2 - Peter is cycling along an 800-m straight stretch...Ch. 2 - In what reasonable ways can you represent or...Ch. 2 - What is the difference between speed and velocity?...Ch. 2 - 21. What physical quantities do we use to describe...Ch. 2 - 22. Devise stories describing each of the motions...Ch. 2 - 23. For each of the position-versus-time graphs in...Ch. 2 - Figure Q2.24 shows velocity-versus-time graphs for...Ch. 2 - Can an object have a nonzero velocity and zero...Ch. 2 - 26. Can an object at one instant of time have zero...Ch. 2 - 27. Your little sister has a battery-powered toy...Ch. 2 - You throw a ball upward. Your friend says that at...Ch. 2 - A car starts at rest from a stoplight and speeds...Ch. 2 - * You are an observer on the ground. (a) Draw two...Ch. 2 - 3. * A car is moving at constant speed on a...Ch. 2 - 4. * A hat falls off a man’s head and lands in the...Ch. 2 - 5 Figure P2.5 shows several displacement vectors...Ch. 2 - 6. Figure P.26 shows an incomplete motion diagram...Ch. 2 - 7. * You drive 100 Km east do some sightseeing and...Ch. 2 - * Choose an object or reference and a set of...Ch. 2 - The scalar x-component of a displacement vector...Ch. 2 - 10. * You recorded your position with respect to...Ch. 2 - * You need to determine the time interval (in...Ch. 2 - A speedometer reads 65 ml/h. (a) Use as many...Ch. 2 - 13. Convert the following record speeds so that...Ch. 2 - 15. * BIO A kidnapped banker looking through a...Ch. 2 - 16 * Some computer scanners scan documents by...Ch. 2 - 18. * Your friend’s pedometer shows that he took...Ch. 2 - During a hike, two friends were caught in a...Ch. 2 - 20. Light travels at a speed of m/s in a vacuum....Ch. 2 - 21. Proxima Centauri is light-years from Earth....Ch. 2 - * Spaceships traveling to other planets in the...Ch. 2 - 23. ** Figure P2.23 shows a velocity-versus-time...Ch. 2 - 24. * Table 2.9 shows position and time data for...Ch. 2 - 25. * Table 2.10 shows position and time data for...Ch. 2 - 26 * You are walking to your physics class at...Ch. 2 - * Gabriele enters an east-west straight bike path...Ch. 2 - * Jim is driving his car at 32 m/s (72 mi/h) along...Ch. 2 - 29. * You hike two-thirds of the way to the top or...Ch. 2 - 30. * Olympic champion swimmer Michael Phelps swam...Ch. 2 - 31. * A car makes a 100-Km trip. it travels the...Ch. 2 - * Jane and Bob see each other when 100m apart....Ch. 2 - 34. A car starts from rest and reaches the speed...Ch. 2 - A truck is traveling east at +16 m/s (a) The...Ch. 2 - 36. Bumper car collision on a bumper car ride,...Ch. 2 - A bus leaves an intersection accelerating at +2.0...Ch. 2 - A jogger is running at +4.0 m/s when a bus passes...Ch. 2 - 39. * The motion of a person as seen by another...Ch. 2 - While cycling at a speed of 10 m/s, a cyclist...Ch. 2 - * EST To his surprise, Daniel found that an egg...Ch. 2 - 42. BIO Squid propulsion Lolliguncula brevis squid...Ch. 2 - Dragster record on the desert In 1977, Kitty ONell...Ch. 2 - * Imagine that a sprinter accelerates from rest to...Ch. 2 - 45. ** Two runners are running next to each other...Ch. 2 - 46. * Meteorite hits car in 1992, a 14-kg...Ch. 2 - 47. BIO Froghopper jump A spittlebug called the...Ch. 2 - 48. Tennis serve The fastest server in women’s...Ch. 2 - 49. * Shot from a cannon in 1998, David...Ch. 2 - Col. John Stapps final sied run Col. John Stapp...Ch. 2 - 51. * Sprinter Usain Bolt reached a maximum speed...Ch. 2 - ** Imagine that Usain Bolt can reach his maximum...Ch. 2 - * A bus is moving at a speed of 36 km/h. How far...Ch. 2 - * EST You want to estimate how fast your car...Ch. 2 - * In your car, you covered 2.0 m during the first...Ch. 2 - 56. (a) Determine the acceleration of a car in...Ch. 2 - You accidentally drop an eraser out the window of...Ch. 2 - 58. * What is the average speed of the eraser in...Ch. 2 - 59. You throw a tennis ball straight upward. The...Ch. 2 - 60. While skydiving, your parachute opens and you...Ch. 2 - * After landing from your skydiving experience,...Ch. 2 - * You are standing on the rim of a canyon. You...Ch. 2 - 63. * You are doing an experiment to determine...Ch. 2 - EST Cliff divers Divers in Acapulco fall 36m from...Ch. 2 - 65. * Galileo dropped a light rock and a heavy...Ch. 2 - * A person holding a lunch bag is moving upward in...Ch. 2 - * A parachutist falling vertically at a constant...Ch. 2 - A diagram representing the motion of two cars is...Ch. 2 - Use the velocity-versus-time graph lines in Figure...Ch. 2 - * While babysitting their younger brother, Chrisso...Ch. 2 - 72. ** An object moves so that its position...Ch. 2 - * The positions of objects A and B with respect to...Ch. 2 - * Two cars on a straight road at time zero are...Ch. 2 - 75. * Oliver drops a tennis ball from a certain...Ch. 2 - 76. * BIO EST Water striders Water striders are...Ch. 2 - 77. You are traveling in your car at 20 m/s a...Ch. 2 - * You are driving a car behind another car. Both...Ch. 2 - 79. * A driver with a 0.80-s reaction time applies...Ch. 2 - 80. ** Some people in a hotel are dropping water...Ch. 2 - s acceleration if hitting an unprotected zygomatic...Ch. 2 - 82 ** EST A bottle rocket burns for 1.6s. After it...Ch. 2 - 83. * Data from state driver’s manual The state...Ch. 2 - 85. * Car A is heading east at 30 m/s and Car B is...Ch. 2 - BIO Head injuries in sports A research group at...Ch. 2 - BIO Head injuries in sports A research group at...Ch. 2 - BIO Head injuries in sports A research group at...Ch. 2 - BIO Head injuries in sports A research group at...Ch. 2 - BIO Head injuries in sports A research group at...Ch. 2 - Automatic sliding doors The first automatic...Ch. 2 - Automatic sliding doors The first automatic...Ch. 2 - Automatic sliding doors The first automatic...Ch. 2 - Automatic sliding doors The first automatic...Ch. 2 - Automatic sliding doors The first automatic...Ch. 2 - Automatic sliding doors The first automatic...

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