What is the speed of light? A. 300,000 kilometers per second. B. 300,000 meters per second. C. 30,000 kilometers per second. D. 30,000 meters per second. 相关知识点: 试题来源: 解析 A。光的速度是 30 万千米每秒,所以答案是 A。B、C、D 选项的速度都不对。
We take a look at what would happen to the human body if it could travel at the speed of light.
15. What would it be like to travel at the speed of A. a light B. lights C. light D. an light 相关知识点: 试题来源: 解析 答案C 解析 light光,此处是不可数名词,排除B;light是辅音开头, 所以排除D the speed of light 句意:以光的速度行进会发生什么?
Light travels very fast. What is the speed of light? A. 300,000 kilometers per second. B. 30 kilometers per hour. C. 3,000 meters per minute. 相关知识点: 试题来源: 解析 A。光的速度是每秒 30 万公里。其他选项速度不对。反馈 收藏 ...
What is the speed of light in a 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。
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...
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. 50,000 kilometers per second 相关知识点: 试题来源: 解析 A。真空中光速是 30 万千米每秒。其他选项速度均不对。
A. It is the fastest speed possible. B. It can be slowed down in certain conditions. C. It is always constant. D. It is only applicable in space. 相关知识点: 试题来源: 解析 B。选项 A 虽然光在真空中速度很快,但不能说它是最快速度可能,理论上可能有超光速现象未被发现;选项 B 在一些...
百度试题 结果1 题目What is the speed of light in a vacuum?相关知识点: 试题来源: 解析 299,792,458 meters per second 反馈 收藏
百度试题 结果1 题目What is the speed of light in a vacuum? A. 299,792 kilometers per second B. 299,792 meters per second C. 299,792 miles per hour D. 299,792 feet per second 相关知识点: 试题来源: 解析 B 反馈 收藏