What is the number of significant figures in each of the following measured quantities? (e) 92.03 km

검증된 단계별 안내

Identify the rules for determining significant figures: All non-zero digits are significant, any zeros between significant digits are significant, and trailing zeros in a decimal number are significant.

Examine the number 92.03 km.

Identify the non-zero digits: 9, 2, and 3. These are all significant.

Identify any zeros between significant digits: The zero between 2 and 3 is significant because it is between two non-zero digits.

Count all the significant digits: 9, 2, 0, and 3.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Significant Figures

Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion. Understanding significant figures is crucial for accurately reporting measurements and ensuring that calculations reflect the precision of the data.

Rules for Counting Significant Figures

There are specific rules for determining the number of significant figures in a measurement. Non-zero digits are always significant, zeros between significant digits are significant, and leading zeros are not. Trailing zeros in a decimal number are significant, while those in a whole number without a decimal point are not. These rules help in identifying the precision of a measurement.

Measurement Precision

Measurement precision refers to the degree of reproducibility or consistency of a measurement. It is influenced by the measuring instrument and the method used. In the context of significant figures, precision is indicated by the number of significant figures in a measurement, which reflects the certainty of the value reported.