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(a)
Interpretation : A graph comparing the Celsius scale and Fahrenheit scale is to be created. Also, the freezing point and boiling point of water are to be plotted on the graph.
Concept Introduction :
There are two types of temperature scales, a Celsius scale and a Fahrenheit scale. Celsius scale was created by Andreas Celsius in 1747 and Fahrenheit scale was created by German scientist Daniel Fahrenheit in 1724.
(a)
Answer to Problem 9E
The following graph compares the Celsius scale and Fahrenheit scale:
Point ‘A’ is freezing point of water.
Point ‘B’ is boiling point of water.
Explanation of Solution
A graph can be plotted comparing the Celsius scale and Fahrenheit scale. In Celsius scale the melting temperature of ice is 00C and boiling point of water is 1000C as measured at sea level. On the Fahrenheit scale, the melting temperature of ice is 320F and boiling point of water is 2120F. Hence 00C corresponds to 320F on the graph. This is marked as point ‘A’. 320F corresponds to 1000C and is marked as point ‘B’.
(b)
Interpretation : Using the graph temperature in 0F has to be determined for 100C.
Concept Introduction :
The Celsius scale and Fahrenheit scale graph can be used to convert temperature in degree Celsius to temperature in degree Fahrenheit.
(b)
Answer to Problem 9E
Temperature in 0F for 100C is 500F.
Explanation of Solution
To find out the temperature in 0F for 100C, first draw a vertical line from 10 on Celsius scale (x-axis) up to the red line. From there,draw a horizontal line to reach the corresponding point on Y axis. This is shown by black lines on the graph. The reading on Fahrenheit scale is obtained. In this case it is 500F.
(c)
Interpretation : Using the graph temperature in 0C has to be determined for 550F.
Concept Introduction :
The Celsius scale and Fahrenheit scale graph can be used to convert temperature in degree Fahrenheit totemperature in degree Celsius.
(c)
Answer to Problem 9E
Explanation of Solution
To find out the temperature in 0C for 550F, first draw a horizontal line from 55 on Fahrenheit scale (y-axis) up to the red line. From there, draw a vertical line below to reach the corresponding point on x- axis. This is shown by black lines on the graph. The reading on Celsius scale is obtained. In this case, it is 12.780C.
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