A. value B. number C. amount D. figure 相关知识点: 试题来源: 解析 A。“value”有“数值;价值”的意思,“constant value”表示“恒定值”,在描述光速时常用“constant value”,A 选项符合。“number”侧重于数字;“amount”常指数量;“figure”更多指数字或图形,均不符合描述光速是恒定值的语境。反馈...
The Speed Of Light(Season 1, Episode 18) TV Episode|Documentary Edit pageAdd to list This program shows how speed of light is measured and what it means. Although light's speed in a vacuum seems a universal absolute, research now suggests presence of varieties of light move. ...
the speed of light也可以解读为“光所拥有的速度”，这就如同the speed of water, the speed of a car一样的结构。此时， the speed of light=light's speed。对“光所拥有的速度”the speed of light, the与speed耦合更紧密一些，而对“神话光速”，speed与light更紧密。将“光所拥有的速度”视为像车速...
The speed of light 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。光的速度约为 300,000 千米每秒,这是科学常识,B 选项 300,000 米每秒速度太慢,C 选项 30,...
解析 1% the speed of light 结果一 题目 英语中 百分之几 后面要加 OF么? 比如光速的百分之1. 是1% the speed of light 还是 1% of the speed of 答案 1% the speed of light相关推荐 1英语中 百分之几 后面要加 OF么? 比如光速的百分之1. 是1% the speed of light 还是 1% of the speed of ...
A. per minute B. per second C. per hour D. per day 相关知识点: 试题来源: 解析 B。本题考查科普常识,光的速度约为 299,792 千米每秒,“per second”表示“每秒”,A 选项“per minute”每分钟,C 选项“per hour”每小时,D 选项“per day”每天,都不符合光速度的单位。反馈 收藏 ...
The speed of light is 300000 ___. A. kilometers per second B. meters per hour C. centimeters per minute D. millimeters per second 相关知识点: 试题来源: 解析 A。光的速度是 300000 千米每秒。选项 B 米每小时、选项 C 厘米每分钟和选项 D 毫米每秒速度非常慢,不适合光的速度表达。反馈...
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。
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 formula for the speed c of light in the vacuum is obtained from c=1/渭00, where 渭0 is the permeability of the vacuum. The formula for c is shown to depend on the number NL of lepton families. The calculated value of c agrees with the defined value when NL=2.92....