Physics: Principles with Applications
Physics: Principles with Applications
6th Edition
ISBN: 9780130606204
Author: Douglas C. Giancoli
Publisher: Prentice Hall
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Chapter 1, Problem 39GP

(a)

To determine

To find: The total number of protons or neutrons in a bacterium.

(a)

Expert Solution
Check Mark

Answer to Problem 39GP

  n1.0×1012 protons or nuetrons

Explanation of Solution

Given:

Mass of a bacterium, M=1015 kg

Mass of proton or neutron, m=1.67×1027 kg

Formula used:

Number of protons or neutrons:

  n=Mm

Where,

  M= Mass of a bacterium

  m= Mass of a proton

  n= Number of protons or neutrons.

Calculation:

Plugging in the given values:

  n=1015 kg1.67×1027 kg=0.5988×10121.0×1012 protons or nuetrons

Conclusion:

Hence, number of protons or neutrons in a bacterium: 1.0×1012

(b)

To determine

To find: The total number of protons or neutrons in a DNA molecule.

(b)

Expert Solution
Check Mark

Answer to Problem 39GP

  n1.0×1010 protons or nuetrons

Explanation of Solution

Given:

Mass of a DNA molecule, M=1017 kg

Mass of proton or neutron, m=1.67×1027 kg

Formula used:

Number of protons or neutrons:

  n=Mm

Where,

  M= Mass of a DNA molecule.

  m= Mass of a proton

  n= Number of protons or neutrons.

Calculation:

Plugging in the given values:

  n=1017 kg1.67×1027 kg=0.5988×10101.0×1012 protons or nuetrons

Conclusion:

Hence, number of protons or neutrons in a DNA molecule: 1.0×1010

(c)

To determine

To find: The total number of protons or neutrons in a human body.

(c)

Expert Solution
Check Mark

Answer to Problem 39GP

  n1.0×1029 protons or nuetrons

Explanation of Solution

Given:

Mass of the human body, M=102 kg

Mass of proton or neutron, m=1.67×1027 kg

Formula used:

Number of protons or neutrons:

  n=Mm

Where,

  M= Mass of the human body.

  m= Mass of a proton

  n= Number of protons or neutrons.

Calculation:

Plugging in the given values:

  n=102 kg1.67×1027 kg=0.5988×10291.0×1029 protons or nuetrons

Conclusion:

Hence, number of protons or neutrons in a human body: 1.0×1029

(d)

To determine

To find: The total number of protons or neutrons in our galaxy.

(d)

Expert Solution
Check Mark

Answer to Problem 39GP

  n1.0×1068 protons or nuetrons

Explanation of Solution

Given:

Mass of our galaxy, M=1041 kg

Mass of proton or neutron, m=1.67×1027 kg

Formula used:

Number of protons or neutrons:

  n=Mm

Where,

  M= Mass of our galaxy.

  m= Mass of a proton

  n= Number of protons or neutrons.

Calculation:

Plugging in the given values:

  n=1041 kg1.67×1027 kg=0.5988×10681.0×1068 protons or nuetrons

Conclusion:

Hence, number of protons or neutrons in our galaxy: 1.0×1068

Chapter 1 Solutions

Physics: Principles with Applications

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