Under no circumstances ___ the speed of light in a vacuum can be exceeded. A. 马还府规前这查米片经究就因际在争目马还府规前这查米片经究就因际在争目do马还府规前这查米片经究就因际在争目马还府规前这查米片经究就因际在争目 B. 命美资现极周整发力要段两系需酸心命美资现极周整发力要...
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...
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...
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/s C. 30,000,000 km/s D. 300,000,000 km/s 相关知识点: 试题来源: 解析 D 反馈 收藏
200,000 kilometers per second C. 400,000 kilometers per second D. 100,000 kilometers per second 相关知识点: 试题来源: 解析 A。解析:科学家已经确定真空中的光速约为 300000 千米每秒,这是一个常识性的知识点。B、C、D 选项的数值都不符合实际情况。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 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
What is the speed of light in a vacuum? A. 300,000 kilometers per second. B. 200,000 kilometers per second. C. 100,000 kilometers per second. D. 400,000 kilometers per second. 相关知识点: 试题来源: 解析 A。本题考查科普知识,光在真空中的速度是 30 万千米每秒。其他选项的速度都...