• :00Days
  • :00Hours
  • :00Mins
  • 00Seconds
A new era for learning is coming soonSign up for free
Log In Start studying!

Select your language

Suggested languages for you:
Answers without the blur. Sign up and see all textbooks for free! Illustration

Q1.

Expert-verified
Physics Principles with Applications
Found in: Page 17
Physics Principles with Applications

Physics Principles with Applications

Book edition 7th
Author(s) Douglas C. Giancoli
Pages 978 pages
ISBN 978-0321625922

Answers without the blur.

Just sign up for free and you're in.

Illustration

Short Answer

What are the merits and drawbacks of using a person’s foot as a standard? Consider both (a) a particular person’s foot and (b) any person’s foot. Keep in mind that it is advantageous that fundamental standards be accessible (easy to compare to), invariable (do not change), indestructible and reproducible.

a).

When we use a person’s foot as a standard, it has both merits and demerits.

A person’s foot is easy to reproduce for measurement. However, if that person dies or suffers from any illness, it may vary the foot size or even destroy the standard.

b).

When we use any person's foot as a standard, it has both merits and demerits. A standard unit that is in the form of a person's foot can be easily accessed. However, variations in foot sizes can make it difficult to be used as a standard and reproduce.

See the step by step solution

Step by Step Solution

Step 1: Merits of using a particular person’s foot as a standard

The merits of using a person’s foot as a standard are as follows:

  • It is easily reproducible.
  • It is cheaper than other instruments of measurement.
  • It is easily accessible even to the people of the lower economic section.

Step 2: Demerits of using a particular person’s foot as a standard

The demerits of using a particular person’s foot as a standard are as follows:

  • The particular person will die ultimately, and then the standard will change.
  • The foot size of the person will change with age.
  • The foot size may also change due to temperature, among many other factors.

Step 3: Merits of using any person’s foot as a standard

The merits of using any person’s foot as a standard are as follows:

  • It is easily accessible to all.
  • It is cheaper than other instruments of measurement.
  • It is within reach of all economic groups of society.

Step 4: Demerits of using any person’s foot as a standard

The drawbacks of using any person’s foot as a standard are as follows:

  • Different people have different foot sizes.
  • The foot size of a person changes with age.
  • The foot sizes of men and women are different.

Recommended explanations on Physics Textbooks

94% of StudySmarter users get better grades.

Sign up for free
94% of StudySmarter users get better grades.