Q16 nd14. (II) Digital bits on a 12.0-cm diameter audio CD arealong an outward spiraling path that starts at radiusR1 = 2.5 cm and finishes at radius R, = 5.8 cm. Thedistance between the centers of neighboring spiral-windings is 1.6 µm (= 1.6 x 10-6 m). (a) Determine thetotal length of the spiraling path. [Hint: Imagine "unwinding"the spiral into a straight path of width 1.6 um, and notethat the original spiral and the straight path both occupythe same area.] (b) To read information, a CD playeradjusts the rotation of the CD so that the player's readoutlaser moves along the spiral path at a constant speed ofabout 1.2 m/s. Estimate the maximum playing time of sucha CD.ingtoateityeedcmitsfly15. (III) A bowling ball traveling with constant speed hits thepins at the end of a bowling lane 16.5 m long. The bowlerhears the sound of the ball hitting the pins 2.80 s after theball is released from his hands. What is the speed of theball, assuming the speed of sound is 340 m/s?nld *16. (III) An automobile traveling 95 km/h overtakes a 1.30-km-long train traveling in the same direction on a track parallel g/to the road. If the train's speed is 75 km/h, how long doesit take the car to pass it, and how far will the car havetraveled in this time? See Fig. 2-36. What are the resultsif the car and train are traveling in opposite directions?ndsvestheateatowowpur-1.30 kmghtotlyageingv = 75 km/h= 95 km/hD-mageFIGURE 2-36 Problem 16.2-4 Accelerationthe17. (I) A sports car accelerates from rest to 95 km/h in 4.3 s.What is its average acceleration in m/s2?18. (I) A sprinter accelerates from rest to 9.00 m/s in 1.38 s.What is her acceleration in (a) m/s²; (b) km/h²?rav-theof aa isand19. (II) A sports car moving at constant velocity travels 120 min 5.0 s. If it then brakes and comes to a stop in 4.0 s, whatis the magnitude of its acceleration (assumed constant) inm/s, and in g's (g = 9.80 m/s²)?Problems 43

Answered: Image /qna-images/answer/d8e66e55-35c9-436a-a45d-b92389d52524.jpg

(III) An automobile traveling 95 km/h overtakes a 1.30-km- long train traveling in the same direction on a track parallel g to the road. If the train's speed is 75 km/h, how long does it take the car to pass it, and how far will the car have traveled in this time? See Fig. 2-36. What are the results if the car and train are traveling in opposite directions? -1.30 km v = 75 km/h v = 95 km/h

(III) An automobile traveling 95 km/h overtakes a 1.30-km- long train traveling in the same direction on a track parallel g to the road. If the train's speed is 75 km/h, how long does it take the car to pass it, and how far will the car have traveled in this time? See Fig. 2-36. What are the results if the car and train are traveling in opposite directions? -1.30 km v = 75 km/h v = 95 km/h

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Q12
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