A light-year is the distance light travels in a year. Specifically, the International Astronomical Union defines a light-year as the distance light travels through interstellar space over 365.25 days. How much is that? The speed of light is 186,282 miles per second, or 299,792.5 kilometers ...
A light-year is a measurement of distance and nottime(as the name might imply). A light-year is the distance a beam of light travels in a singleEarthyear, which equates to approximately 6 trillion miles (9.7 trillion kilometers).
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In the study of the universe, the term “light - year” is often used. A light - year is a unit of ___. Which option is correct? A. time B. length C. speed D. mass 相关知识点: 试题来源: 解析 B。解析:在天文学中,“光年”是一个长度单位,用于衡量天体之间的距离,而不是时...
( ) 4. A light year is a measure of A. time B. speed C. length D. height 相关知识点: 试题来源: 解析 答案4.C 解析 4.a light year光年,光年是长度单位,光年一般被用于计算 恒星间的距离。 A.time时间 B.speed速度 C.length长度 D.height高度 选C 。 句意:光年是长度的度量单位。
is a great choice because of how adaptable it is.Besides having a great amount of storage, it comes with an internal security pocket. It weighs just 1.38kg as opposed to other backpacks,which can weigh up to nearly 2kg. If you're going to go ...
This refers to the things that exist in this universe; we see around us things that exist, such as trees, rocks, mankind, the earth, the heavens, seas, rivers… If it is asked: these things are so many – who created them and is taking care of them?
aAs defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year.the light-year is 9,460,730,472,580.8 km or 63,241 au. 如是由国际天文学联合IAU (定义的),光年是光旅行在真空在一个朱利安year.the光年是9,460,730,...
()A light year is a measure of ___。A. timeB. speedC. lengthD. height 相关知识点: 试题来源: 解析 C 这道题问的是 “一光年是一种什么的度量”。A. time(时间),光年显然不是用来衡量时间的,所以 A 选项错误。B. speed(速度),光年并非速度的度量单位,B 选项不正确。C. length(长度),...
题目中的英文部分"A light year is the great unit of measurement for distance"译为“光年是计量距离的最大单位”。需要判断是否准确。光年(light year)是天文学中用于测量极远距离的单位(约9.46万亿公里),但它并非“最大”的距离单位。例如,秒差距(parsec,约3.26光年)和千秒差距(kiloparsec)等更大单位同样被...