
Concept explainers
a)
To write: the distance travelled by light in one yearin scientific notation.
a)

Answer to Problem 81E
Explanation of Solution
Given information:
The distance travelled by light in one year is
Concept used:
Scientific notation:
A notation in which a given quantity can be expressed as a number with significant digits required for a specified degree of accuracy and multiplied by 10 to the appropriate power.
Calculation:
Consider the given number.
So, the number can be expressed in scientific notation as
Hence,
b)
To write: the diameter of electron in scientific notation.
b)

Answer to Problem 81E
Explanation of Solution
Given information:
Diameter of electron is
Concept used:
Scientific notation:
A notation in which a given quantity can be expressed as a number with significant digits required for a specified degree of accuracy and multiplied by 10 to the appropriate power.
Calculation:
Consider the given number.
So, the number can be expressed in scientific notation as
Hence,
c)
To write: the number of molecules in a drop of water in scientific notation.
c)

Answer to Problem 81E
Explanation of Solution
Given information:
The number of molecules in a drop of water is
Concept used:
Scientific notation:
A notation in which a given quantity can be expressed as a number with significant digits required for a specified degree of accuracy and multiplied by 10 to the appropriate power.
Calculation:
Consider the given number.
So, the number can be expressed in scientific notation as
Hence,
Chapter 1 Solutions
EBK PRECALCULUS: MATHEMATICS FOR CALCUL
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