CONCEPTUAL PHYSICS LL FD
CONCEPTUAL PHYSICS LL FD
12th Edition
ISBN: 9780135745816
Author: Hewitt
Publisher: PEARSON
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Chapter 23, Problem 9RCQ

Does heating a metal wire increase or decrease its electrical resistance?

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3.63 • Leaping the River II. A physics professor did daredevil stunts in his spare time. His last stunt was an attempt to jump across a river on a motorcycle (Fig. P3.63). The takeoff ramp was inclined at 53.0°, the river was 40.0 m wide, and the far bank was 15.0 m lower than the top of the ramp. The river itself was 100 m below the ramp. Ignore air resistance. (a) What should his speed have been at the top of the ramp to have just made it to the edge of the far bank? (b) If his speed was only half the value found in part (a), where did he land? Figure P3.63 53.0° 100 m 40.0 m→ 15.0 m
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Chapter 23 Solutions

CONCEPTUAL PHYSICS LL FD

Ch. 23 - Prob. 11RCQCh. 23 - Prob. 12RCQCh. 23 - Prob. 13RCQCh. 23 - Prob. 14RCQCh. 23 - Prob. 15RCQCh. 23 - Prob. 16RCQCh. 23 - Prob. 17RCQCh. 23 - Prob. 18RCQCh. 23 - Prob. 19RCQCh. 23 - Prob. 20RCQCh. 23 - Prob. 21RCQCh. 23 - Prob. 22RCQCh. 23 - Prob. 23RCQCh. 23 - Prob. 24RCQCh. 23 - Prob. 25RCQCh. 23 - Prob. 26RCQCh. 23 - Prob. 27RCQCh. 23 - Prob. 28RCQCh. 23 - Prob. 29RCQCh. 23 - Prob. 30RCQCh. 23 - Prob. 31RCQCh. 23 - Prob. 32RCQCh. 23 - Prob. 33RCQCh. 23 - Prob. 34RCQCh. 23 - Prob. 35RCQCh. 23 - 36. Send a letter to Grandma and convince her that...Ch. 23 - Ohm’s law: 37. A toaster has a heating element...Ch. 23 - Prob. 38RCQCh. 23 - 39. Calculate the current in the 240-Ώ filament of...Ch. 23 - Power 40. An electric toy draws 0.5 A from a...Ch. 23 - 41. Calculate the power of a hair dryer that...Ch. 23 - 42. What is the effect on the current in a wire if...Ch. 23 - Prob. 43RCQCh. 23 - 44. Rearrange the equation current = voltage/...Ch. 23 - Prob. 45RCQCh. 23 - 46. The total charge that an automobile battery...Ch. 23 - Prob. 47RCQCh. 23 - 48. A 4-W night-light is plugged into a 120-V...Ch. 23 - Prob. 49RCQCh. 23 - 50. Show in the preceding problem that 540 C of...Ch. 23 - Prob. 51RCQCh. 23 - 52. Rank the circuits illustrated according to the...Ch. 23 - 53. The bulbs shown are identical. An ammeter is...Ch. 23 - 54. All bulbs are identical in the circuits shown....Ch. 23 - 55. All bulbs are identical in the circuits shown....Ch. 23 - 56. Consider the three parts of the circuit: A,...Ch. 23 - Prob. 57RCQCh. 23 - Prob. 58RCQCh. 23 - Prob. 59RCQCh. 23 - 60. Consider a circuit with a main wire that...Ch. 23 - Prob. 61RCQCh. 23 - Prob. 62RCQCh. 23 - 63. The circuit within an incandescent lamp is...Ch. 23 - Prob. 64RCQCh. 23 - 65. How much energy is given to each coulomb of...Ch. 23 - Prob. 66RCQCh. 23 - Prob. 67RCQCh. 23 - 68. In which of the circuits shown does a current...Ch. 23 - Prob. 69RCQCh. 23 - 70. Something gets “used up” in a battery that...Ch. 23 - Prob. 71RCQCh. 23 - Prob. 72RCQCh. 23 - Prob. 73RCQCh. 23 - 74. Why is the current in an incandescent bulb...Ch. 23 - Prob. 75RCQCh. 23 - 76. Why are all compact fluorescent lamps more...Ch. 23 - Prob. 77RCQCh. 23 - Prob. 78RCQCh. 23 - Prob. 79RCQCh. 23 - 80. What causes electric shock: current or...Ch. 23 - Prob. 81RCQCh. 23 - Prob. 82RCQCh. 23 - Prob. 83RCQCh. 23 - 84. As more lines are opened at a fast-food...Ch. 23 - Prob. 85RCQCh. 23 - 86. Which is the same for a 10-Ω and a 20-Ω...Ch. 23 - Prob. 87RCQCh. 23 - The damaging effects of electric shock result from...Ch. 23 - Prob. 89RCQCh. 23 - Prob. 90RCQCh. 23 - 91. Which will do less damage: plugging a 110-V...Ch. 23 - Prob. 92RCQCh. 23 - Prob. 93RCQCh. 23 - Prob. 94RCQCh. 23 - Prob. 95RCQCh. 23 - Prob. 96RCQCh. 23 - 97. What happens to the brightness of bulb A when...Ch. 23 - Prob. 98RCQCh. 23 - 99. In the circuit shown, how do the brightness’s...Ch. 23 - Prob. 100RCQCh. 23 - Prob. 101RCQCh. 23 - Prob. 102RCQCh. 23 - 103. When a pair of identical resistors are...Ch. 23 - Prob. 104RCQCh. 23 - Prob. 105RCQCh. 23 - 106. Are these three circuits equivalent? Why or...Ch. 23 - Prob. 107RCQCh. 23 - Prob. 108RCQCh. 23 - Prob. 109RCQCh. 23 - Prob. 110RCQCh. 23 - To connect a pair of resistors so that their...Ch. 23 - Prob. 112RCQCh. 23 - Prob. 113RCQCh. 23 - Prob. 114RCQCh. 23 - Prob. 115RCQCh. 23 - Prob. 116RCQCh. 23 - Prob. 117RCQCh. 23 - Prob. 118RCQCh. 23 - Prob. 119RCQCh. 23 - (a) What single resistor would be equivalent to...Ch. 23 - 121. Three 6-ohm resistors are arranged in a...
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