题目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。
What is the speed of light? A. About 300,000 kilometers per second. B. About 30,000 kilometers per second. C. About 3,000 kilometers per second. D. About 300 kilometers per second. 相关知识点: 试题来源: 解析 A。本题是关于光速的科普。光速约为 300000 千米每秒,其他选项的速度远...
What is the speed of light in a vacuum? 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。真空中光速是 30 万千米每秒。选项 B、C、D 数值错误。
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. 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...
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
What is the speed of light in a vacuum? A. About 300,000 kilometers per second. B. About 186,000 miles per hour. C. About 670 million miles per hour. D. About 1,080 million kilometers per hour. 相关知识点: 试题来源: 解析 A。在真空中,光的速度约为 300,000 千米每秒,A 选项...
What is the speed of light in vacuum? A. 3×10⁵ m/s B. 3×10⁶ m/s C. 3×10⁷ m/s D. 3×10⁸ m/s 相关知识点: 试题来源: 解析 D。光在真空中的速度是 3×10⁸ m/s。A、B、C 选项数值错误。本题涉及光在真空中速度的物理知识,阅读技巧是记住这个重要的物理常量。
3.What is the speed of light in vacuum?Write it in scientific notation with two digits of precision.相关知识点: 试题来源: 解析 光在真空中的速度是多少?用两位数字精度的科学计数法 ANSWER: The speed of light in vacuum is 299,792,458 metre per second.It is about 3.00×10^8m/s ...
百度试题 结果1 题目___ is the speed of light? A. What B. How much C. How fast D. How many 相关知识点: 试题来源: 解析 A。“光速是什么?”询问事物的内容用 what。反馈 收藏