Concept explainers
For an answer to be complete, the units need to be specified. Why?
To Explain: The units need to be specified for an answer to be complete.
Answer to Problem 5Q
Solution:
The unit of measurement gives an idea about physical quantity(type) and the system of units (S.I unit, C.G.S unit, MKS unit, etc.).So,one must specify units.
Explanation of Solution
During a particular communication, units are understood, but not always.
Suppose a friend asks the age of one’s younger brother and onereplies that it is 11. The friend would not reachthe correct answer as it maybe 11 days,11 months,or11 years.
If one asksthe price of an object atan international airport and the shopkeeper says 10, it is not the complete answer. It may be ten dollars, ten pounds or ten euros.
In physics, there area large number of physical quantities, so to differentiate, the unit must be mentionedotherwise, it has no meaning.
Conclusion:
For an answer to be complete, the unitsneed to be specified otherwise there will be no meaning of the answer with the numerical value only.
Chapter 1 Solutions
Physics: Principles with Applications
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