Physics: Principles with Applications
Physics: Principles with Applications
6th Edition
ISBN: 9780130606204
Author: Douglas C. Giancoli
Publisher: Prentice Hall
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Question
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Chapter 7, Problem 13P

(a)

To determine

The speed and direction of each section of rocket.

(a)

Expert Solution
Check Mark

Answer to Problem 13P

  v1=6900 m/s away from the earth.

  v2=4700 m/s away from the earth.

Explanation of Solution

Given:

Mass of rocket, MR=975 kg

Speed of rocket with respect to earth, vR=5.8×103m/s

Mass of each section, Me=MR2

Velocity after explosion is 2.2×103m/s

Formula used:

  Pi=Pf

Where, Pi = initial momentum

  Pf = final momentum

Calculation:

The relative velocity is:

  v1v2=2.2×103m/s    (1)

Applying principle of conservation,

  MR=975 kgvR=5.8×103m/sPi=PfMRv=Mev1+Mev2      (2)MRv=MR2(v1+v2)2v=v1+v2v1+v2=2(5.8×103)v1+v2=11600   (3)

From equation (1) and (3),

  v1=6900 m/s , away from the earth

  v2=4700 m/s , away from the earth

(b)

To determine

The energy supplied by explosion.

(b)

Expert Solution
Check Mark

Answer to Problem 13P

The energy supplied by the explosion is 5.89×108 J .

Explanation of Solution

Given:

  v1=6900 m/s

  v2=4700 m/s

  v=5.8×103 m/s

Formula used:

  ΔE=EfEi

Where, Ei = initial energy

  Ef = final energy

Calculation:

  ΔE=EfEiΔE=(Mev122+Mev222)(MRv22)ΔE=M2[(v122+v222)v2]ΔE=9752[((6900)22+(4700)22)(5.8×103)2]ΔE=5.89×108J

Chapter 7 Solutions

Physics: Principles with Applications

Ch. 7 - Prob. 11QCh. 7 - Prob. 12QCh. 7 - Prob. 13QCh. 7 - Prob. 14QCh. 7 - Prob. 15QCh. 7 - Prob. 16QCh. 7 - Prob. 17QCh. 7 - Prob. 18QCh. 7 - Prob. 19QCh. 7 - Prob. 1PCh. 7 - Prob. 2PCh. 7 - Prob. 3PCh. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - Prob. 6PCh. 7 - Prob. 7PCh. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - Prob. 10PCh. 7 - Prob. 11PCh. 7 - Prob. 12PCh. 7 - Prob. 13PCh. 7 - Prob. 14PCh. 7 - Prob. 15PCh. 7 - Prob. 16PCh. 7 - Prob. 17PCh. 7 - Prob. 18PCh. 7 - Prob. 19PCh. 7 - Prob. 20PCh. 7 - Prob. 21PCh. 7 - Prob. 22PCh. 7 - Prob. 23PCh. 7 - Prob. 24PCh. 7 - Prob. 25PCh. 7 - Prob. 26PCh. 7 - Prob. 27PCh. 7 - Prob. 28PCh. 7 - Prob. 29PCh. 7 - Prob. 30PCh. 7 - Prob. 31PCh. 7 - Prob. 32PCh. 7 - Prob. 33PCh. 7 - Prob. 34PCh. 7 - Prob. 35PCh. 7 - Prob. 36PCh. 7 - Prob. 37PCh. 7 - Prob. 38PCh. 7 - Prob. 39PCh. 7 - Prob. 40PCh. 7 - Prob. 41PCh. 7 - Prob. 42PCh. 7 - Prob. 43PCh. 7 - Prob. 44PCh. 7 - Prob. 45PCh. 7 - Prob. 46PCh. 7 - Prob. 47PCh. 7 - Prob. 48PCh. 7 - Prob. 49PCh. 7 - Prob. 50PCh. 7 - Prob. 51PCh. 7 - Prob. 52PCh. 7 - Prob. 53PCh. 7 - Prob. 54PCh. 7 - Prob. 55PCh. 7 - Prob. 56PCh. 7 - Prob. 57PCh. 7 - Prob. 58PCh. 7 - Prob. 59PCh. 7 - Prob. 60PCh. 7 - Prob. 61PCh. 7 - Prob. 62GPCh. 7 - Prob. 63GPCh. 7 - Prob. 64GPCh. 7 - Prob. 65GPCh. 7 - Prob. 66GPCh. 7 - Prob. 67GPCh. 7 - Prob. 68GPCh. 7 - Prob. 69GPCh. 7 - Prob. 70GPCh. 7 - Prob. 71GPCh. 7 - Prob. 72GPCh. 7 - Prob. 73GPCh. 7 - Prob. 74GPCh. 7 - Prob. 75GPCh. 7 - Prob. 76GPCh. 7 - Prob. 77GPCh. 7 - Prob. 78GPCh. 7 - Prob. 79GPCh. 7 - Prob. 80GPCh. 7 - Prob. 81GP
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