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...
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 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...
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. 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 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。
Light in a vacuum has a frequency of 5.0×1015 Hz. What is the wavelength of light in a vacuum? a. 1.7×107 m b. 60 nm c. 600 nm d. 30 nm Light: Light is an electromagnetic wave. It has an electric field as well...
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 ...
What is the speed of light in a vacuum in mi/s? Speed: To measure speed, you divide the distance traveled by the amount of time. For example, if you traveled 60 miles in two hours, your speed would be calculated as 60/2 or 30 miles per hour. ...
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