In a Flask, 114 $67.0 \mathrm {~W}$ Of Power, with Perfect Efficiency

question 148

Multiple Choice

In a flask, 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 $25 ^ { \circ } \mathrm { C } ?$ The specific heat of water is 4186 J/kg ? K.

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

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Definitions:

Variable Manufacturing Overhead

Costs that vary proportionally with manufacturing activity, such as indirect materials and utilities.

Markup

The amount added to the cost of goods to cover operating expenses and profit, expressed as a percentage of cost.

Direct Labor-Hours

Direct labor-hours refer to the total hours worked by employees directly involved in the production process, used as a basis for allocating labor costs to products.

Machine-Hours

The total hours that machinery is operated during a specific period for production purposes.