A Friend Argues That If Mass Were Really Conserved He

question 65

Multiple Choice

A friend argues that if mass were really conserved he would never need to refill his gas tank. What explanation do you offer your friend?

• A)The atoms (mass)of gasoline are converted into energy by the engine according to E=m .
• B)The Law of Conservation of Mass does not apply to reactions involving combustion or explosion of matter.
• C)The atoms (mass)of gasoline are converted into exhaust fumes.
• D)The oil companies make gasoline in a way that it gets used up so that we are always required to replenish it.

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Definitions:

Variable Cost Per Unit

The cost that varies with each unit produced or sold, not including fixed costs.

Fixed Cost Per Unit

The total fixed costs of production divided by the quantity of output produced, indicating how fixed costs dilute as production volume increases.

Mixed Cost

A cost composed of a fixed and variable component, changing with the level of output or activity.

Variable Cost

A cost that varies in direct proportion to changes in the level of activity or production volume.