Problem: A watt is a measure of power (the rate of energy change) equal to 1 J/s.An adult person radiates heat to the surroundings at about the same rate as a 100-watt electric incandescent light bulb. What is the total amount of energy in kcal radiated to the surroundings by an adult over a 25 h period?

FREE Expert Solution

We are asked to calculate the total amount of energy in kcal radiated to the surroundings by an adult over a 25 h period.


View Complete Written Solution
Problem Details

A watt is a measure of power (the rate of energy change) equal to 1 J/s.

An adult person radiates heat to the surroundings at about the same rate as a 100-watt electric incandescent light bulb. What is the total amount of energy in kcal radiated to the surroundings by an adult over a 25 h period?

Learn this topic by watchingDimensional Analysis Concept Videos
All Chemistry Practice Problems Dimensional Analysis Practice Problems
Q.Consider an Avogadro’s number of pennies stacked one on top of the other.If this money were equally distributed among the worlds population of 7.0 bil...
Q.Consider an Avogadro’s number of pennies stacked one on top of the other.Would each person be a millionaire? A billionaire? A trillionaire?
Q.A penny has a thickness of approximately 1.0 mm.If you stacked Avogadros number of pennies one on top of the other on Earths surface, how far would th...
Q.Total U.S. farmland occupies 954 million acres.Total U.S. land area is 3.537 million square miles. What percentage of U.S. land is farmland?
See all problems in Dimensional Analysis

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Dimensional Analysis concept. You can view video lessons to learn Dimensional Analysis. Or if you need more Dimensional Analysis practice, you can also practice Dimensional Analysis practice problems.