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
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...
What is the speed of light per minute? How many meters does light travel in a second? The speed of light is 3.00 x 10^8 m/s. How fast is this in miles per hour (miles/h)? What is the speed of light measured in? What is the speed of light squared?
The speed of light is about 300 million meters per second. What is the unit of speed? A. meter per second B. kilogram C. newton D. joule 相关知识点: 试题来源: 解析 A。速度的单位是米每秒,meter per second;B 选项 kilogram 是千克,质量单位;C 选项 newton 是牛顿,力的单位;D 选项 joule...
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。其他选项的速度都不准确。反馈...
百度试题 结果1 题目The speed of light is about ___ kilometers per second. A. 300,000 B. 400,000 C. 500,000 D. 600,000 相关知识点: 试题来源: 解析 A。解析:光速约为 30 万千米每秒。反馈 收藏
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。反馈...
将“光所拥有的速度”视为像车速一样物理量一样时，它就可以有不同的测量精度版本，另外光在不同介质中的速度也确实不一样，所以可以有a speed of light，比如 【例句1】Romer calculated a speed of light of around 220,000 kilometers per second. (罗默计算出的光速约为每秒22万公里。)对a speed of ...
百度试题 结果1 题目The speed of light is about ___ kilometers per second. A. 300,000 B. 186,000 C. 100,000 D. 50,000 相关知识点: 试题来源: 解析 A。光的速度大约是 30 万千米每秒,选项 A 正确。反馈 收藏