A Container of 114 $67.0 \mathrm {~W}$ Of Power, with Perfect Efficiency

question 159

Multiple Choice

A container of 114.0 g of water is heated using $67.0 \mathrm {~W}$ of power, with perfect efficiency. How long will it take to raise the temperature of the water from $15 ^ { \circ } \mathrm { C }$ to $25 ^ { \circ } \mathrm { C } \text { ? }$ The specific heat capacity of the container is negligible, and the specific heat capacity of water is 4.186 × 10³ J/kg ∙ C.

• A) 71 s
• B) 4.1 s
• C) 17 s
• D) 320,000 s

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Definitions:

Gross Earnings

Total compensation earned by an employee.

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A measure of labor input, which is the time spent by workers directly manufacturing a product.

Direct Materials

Direct materials are raw materials that are directly used in the manufacturing process of a product and are easily traceable to it.

Total Cost

The sum of all expenses incurred in the production of goods or services, including fixed and variable costs.