Suppose that a person eats 2105 Calories per day. Convert this amount of energy into each unit. c. kWh

검증된 단계별 안내

Understand that 1 Calorie (with an uppercase C, also known as a kilocalorie) is equivalent to 1000 calories (with a lowercase c).

Recall that 1 calorie is equivalent to 4.184 joules.

Calculate the total energy in joules by multiplying the number of Calories by 1000 to convert to calories, and then by 4.184 to convert to joules.

Remember that 1 kilowatt-hour (kWh) is equivalent to 3.6 million joules (3.6 x 10^6 J).

Convert the energy from joules to kilowatt-hours by dividing the total joules by 3.6 million.

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주요 개념

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Calorie Conversion

A Calorie (specifically a kilocalorie) is a unit of energy commonly used in nutrition. It is defined as the amount of energy required to raise the temperature of one kilogram of water by one degree Celsius. Understanding how to convert Calories to other energy units is essential for solving energy-related problems.

Energy Units

Energy can be measured in various units, including joules, kilowatt-hours (kWh), and Calories. One kilowatt-hour is the amount of energy consumed by a 1,000-watt appliance running for one hour, equivalent to 3.6 million joules. Familiarity with these units and their conversions is crucial for accurate energy calculations.

Conversion Factors

Conversion factors are numerical values used to convert one unit of measurement to another. For example, to convert Calories to kWh, one must know that 1 Calorie is approximately 0.000293 kWh. Mastery of these factors allows for seamless transitions between different energy units in calculations.