CONCEPTUAL PHYSICS LL FD
12th Edition
ISBN: 9780135745816
Author: Hewitt
Publisher: PEARSON
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Chapter 20, Problem 9RCQ
To determine
The factors on which the speed of sound depends and the factors on which the speed of sound does not depend.
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Part C
Find the height yi
from which the rock was launched.
Express your answer in meters to three significant figures.
Learning Goal:
To practice Problem-Solving Strategy 4.1 for projectile motion problems.
A rock thrown with speed 12.0 m/s and launch angle 30.0 ∘ (above the horizontal) travels a horizontal distance of d = 19.0 m before hitting the ground. From what height was the rock thrown? Use the value g = 9.800 m/s2 for the free-fall acceleration.
PROBLEM-SOLVING STRATEGY 4.1 Projectile motion problems
MODEL: Is it reasonable to ignore air resistance? If so, use the projectile motion model.
VISUALIZE: Establish a coordinate system with the x-axis horizontal and the y-axis vertical. Define symbols and identify what the problem is trying to find. For a launch at angle θ, the initial velocity components are vix=v0cosθ and viy=v0sinθ.
SOLVE: The acceleration is known: ax=0 and ay=−g. Thus, the problem becomes one of…
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Chapter 20 Solutions
CONCEPTUAL PHYSICS LL FD
Ch. 20 - Prob. 1RCQCh. 20 - Prob. 2RCQCh. 20 - Prob. 3RCQCh. 20 - Prob. 4RCQCh. 20 - Prob. 5RCQCh. 20 - Prob. 6RCQCh. 20 - Prob. 7RCQCh. 20 - Prob. 8RCQCh. 20 - Prob. 9RCQCh. 20 - Prob. 10RCQ
Ch. 20 - Prob. 11RCQCh. 20 - Prob. 12RCQCh. 20 - Prob. 13RCQCh. 20 - Prob. 14RCQCh. 20 - Prob. 15RCQCh. 20 - Prob. 16RCQCh. 20 - Prob. 17RCQCh. 20 - Prob. 18RCQCh. 20 - Prob. 19RCQCh. 20 - Prob. 20RCQCh. 20 - Prob. 21RCQCh. 20 - Prob. 22RCQCh. 20 - Prob. 23RCQCh. 20 - Prob. 24RCQCh. 20 - Prob. 25RCQCh. 20 - Prob. 26RCQCh. 20 - Prob. 27RCQCh. 20 - Prob. 28RCQCh. 20 - Prob. 29RCQCh. 20 - Prob. 30RCQCh. 20 - Prob. 31RCQCh. 20 - Prob. 32RCQCh. 20 - Prob. 33RCQCh. 20 - Prob. 34RCQCh. 20 - Prob. 35RCQCh. 20 - Prob. 36RCQCh. 20 - Prob. 37RCQCh. 20 - Prob. 38RCQCh. 20 - Prob. 39RCQCh. 20 - Prob. 40RCQCh. 20 - Prob. 41RCQCh. 20 - Prob. 42RCQCh. 20 - Prob. 43RCQCh. 20 - Prob. 44RCQCh. 20 - Prob. 45RCQCh. 20 - Prob. 46RCQCh. 20 - Prob. 47RCQCh. 20 - Prob. 48RCQCh. 20 - Prob. 49RCQCh. 20 - Prob. 50RCQCh. 20 - Prob. 51RCQCh. 20 - Prob. 52RCQCh. 20 - Prob. 53RCQCh. 20 - Prob. 54RCQCh. 20 - Prob. 55RCQCh. 20 - Prob. 56RCQCh. 20 - Prob. 57RCQCh. 20 - Prob. 58RCQCh. 20 - Prob. 59RCQCh. 20 - Prob. 60RCQCh. 20 - Prob. 61RCQCh. 20 - Prob. 62RCQCh. 20 - Prob. 63RCQCh. 20 - Prob. 64RCQCh. 20 - Prob. 65RCQCh. 20 - Prob. 66RCQCh. 20 - Prob. 67RCQCh. 20 - Prob. 68RCQCh. 20 - Prob. 69RCQCh. 20 - Prob. 70RCQCh. 20 - Prob. 71RCQCh. 20 - Prob. 72RCQCh. 20 - Prob. 73RCQCh. 20 - Prob. 74RCQCh. 20 - Prob. 75RCQCh. 20 - Prob. 76RCQCh. 20 - Prob. 77RCQCh. 20 - Prob. 78RCQCh. 20 - Prob. 79RCQCh. 20 - Prob. 80RCQCh. 20 - Prob. 81RCQCh. 20 - Prob. 82RCQCh. 20 - Prob. 83RCQCh. 20 - Prob. 84RCQCh. 20 - Prob. 85RCQCh. 20 - Prob. 86RCQCh. 20 - Prob. 87RCQCh. 20 - Prob. 88RCQCh. 20 - Prob. 89RCQCh. 20 - Prob. 90RCQCh. 20 - Prob. 91RCQ
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