교과서 질문
Gemstones are weighed in carats, where 1 carat = 200 mg exactly. What is the mass in grams of the Hope diamond, the world's largest blue diamond, at 44.4 carats?
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2. Measurement and Problem Solving
Dimensional Analysis
1:47분문제 121
교과서 질문
a. An athlete with a body mass of 65 kg has 3.0% body fat. How many pounds of body fat does that person have? (2.6)
검증된 단계별 안내1
Convert the body mass from kilograms to pounds using the conversion factor: 1 kg = 2.20462 pounds.
Calculate the total body mass in pounds by multiplying the body mass in kilograms by the conversion factor.
Determine the mass of body fat in pounds by calculating 3.0% of the total body mass in pounds.
Use the formula: \( \text{Body Fat (pounds)} = \text{Total Body Mass (pounds)} \times \frac{3.0}{100} \).
Ensure the units are consistent and verify the calculation steps for accuracy.
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1m주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Body Mass and Body Fat Percentage
Body mass refers to the total weight of an individual, typically measured in kilograms or pounds. Body fat percentage indicates the proportion of fat in relation to total body mass. In this case, the athlete's body fat percentage is 3.0%, meaning that 3.0% of their total body mass is composed of fat.
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가이드 코스
00:38
Mass Percent Concept
Unit Conversion
Unit conversion is the process of converting a measurement from one unit to another. In this question, the athlete's body mass is given in kilograms, but the answer requires the body fat to be expressed in pounds. Understanding how to convert kilograms to pounds (1 kg = 2.20462 lbs) is essential for accurately calculating the amount of body fat.
추천 영상:
가이드 코스
01:56Conversion Factors (Simplified) Concept 1
Calculating Body Fat
To calculate the amount of body fat, one must multiply the total body mass by the body fat percentage (expressed as a decimal). For example, if an athlete weighs 65 kg and has 3.0% body fat, the calculation involves finding 3.0% of 65 kg, which gives the total mass of body fat in kilograms before converting it to pounds.
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가이드 코스
03:13Calculate Oxidation Numbers
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