The speed of light in a vacuum is approximately _. A. 300,000 kilometers per second B. 3,000 kilometers per second C. 30,000 kilometers per second D. 300 kilometers per second 相关知识点: 试题来源: 解析 A。真空中的光速约为 30 万千米每秒。其他选项数值错误。
The speed of light in a vacuum is approximately ___. A. 300,000 kilometers per second B. 3,000 kilometers per second C. 30 kilometers per second D. 3 kilometers per second 相关知识点: 试题来源: 解析 A。解析:光在真空中的速度约为 30 万千米每秒。其他选项的速度都远小于光在真空中...
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...
百度试题 结果1 题目The speed of light in a vacuum is approximately: A. 300,000 km/s B. 3,000,000 km/h C. 299,792,458 m/s D. 30,000,000 m/s 相关知识点: 试题来源: 解析 C 反馈 收藏
The speed of light in a vacuum is approximately: A. 们十们十300,000 kilometers per second们十们十 B. 调指生它指指县候今能调指生它指指县候今能200,000 kilometers per second调指生它指指县候今能调指生它指指县候今能 C. 通高保然者效相门通验当出文南装出运候选办通高保然者效相门...
Scientists have discovered that the speed of light in a vacuum is approximately ___
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
百度试题 结果1 题目The speed of light in vacuum is approximately ___ meters per second. A. 300,000 B. 200,000 C. 100,000 D. 400,000 相关知识点: 试题来源: 解析 A。真空中的光速约为 300,000 米每秒。所以选 300,000。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. ...