百度试题 结果1 题目The speed of light in a vacuum is approximately ___ meters per second.相关知识点: 试题来源: 解析 答案:299,792,458 反馈 收藏
百度试题 结果1 题目The speed of light in a vacuum is approximately ___ meters per second.相关知识点: 试题来源: 解析 答案:299,792,458 反馈 收藏
1 speed of light [glass] is equal to 199861638 meter/second. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between speed of light [glass] and meters/second. Type in your own numbers in the form to convert the units!
百度试题 结果1 题目The speed of light in a vacuum is approximately ___ meters per second.相关知识点: 试题来源: 解析 答案:299,792,458 反馈 收藏
The speed of light in vacuum is approximately 300,000 kilometers per second. Which of the following statements is correct about the speed of light? A. It is always the same regardless of the medium. B. It is slower in air than in vacuum. C. It is faster in water than in vacuum. ...
A. 300,000 kilometers per second. B. 30,000 kilometers per second. C. 3,000 kilometers per second. D. 300 kilometers per second. 相关知识点: 试题来源: 解析 A。解析:真空中的光速是 30 万千米每秒。选项 B、C、D 的速度都不正确。反馈...
What is the speed of light in a vacuum? A. About 300,000 kilometers per second. B. About 3,000 kilometers per second. C. About 30,000 kilometers per second. D. About 3,000,000 kilometers per second. 相关知识点: 试题来源: 解析 A。本题考查对光速的了解。光在真空中的速度约为 ...
比如 【例句1】Romer calculated a speed of light of around 220,000 kilometers per second. (罗默计算出的光速约为每秒22万公里。)对a speed of light, speed of light=light's speed, 但a light's speed结构不好。对“光所拥有的速度”的世俗物理量，也可以two/three/several speeds of light。
A. three hundred thousand B. three hundreds thousand C. three hundred thousands D. three hundreds thousands of 相关知识点: 试题来源: 解析 A。“hundred”“thousand”等词,前面有具体数字时,不用复数形式,也不能加“of”,所以“三百千米”是“three hundred thousand kilometers”。反馈...
The speed of light in a vacuum is about ___. A. 300,000 kilometers per second B. 300,000 meters per second C. 30,000 kilometers per second D. 3,000 kilometers per second 相关知识点: 试题来源: 解析 A。光在真空中的速度约为 300,000 千米每秒,这是物理学中的基本常识,B 选项米...