1. Since 1983 the standard meter has been defined in terms of which of the following? a. specific alloy bar housed at Sevres, France b. wavelength of light emitted by krypton-86 c. distance from the Earth's equator to the North Pole d. the distance light travels in a certain fraction of a second e. None of the above ANSWER: d POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 10/30/2023 2:07 AM DATE MODIFIED: 10/30/2023 2:08 AM 2. Since 1967 the standard definition for the second has been based on which of the following? a. characteristic frequency of the cesium-133 atom b. average solar day c. sidereal day d. Greenwich Civil Time e. None of the above ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 10/30/2023 2:08 AM DATE MODIFIED: 10/30/2023 2:09 AM

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jordancarter 7 months ago

This study guide is clear, well-organized, and covers all the essential topics. The explanations are concise, making complex concepts easier to understand. It could benefit from more practice questions, but overall, it's a great resource for efficient studying. Highly recommend!

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