试题来源: 解析 翻译如下:1光年就是光在一年里走的距离!结果一 题目 one light year is the distance that light travels in one 答案 翻译如下: 1光年就是光在一年里走的距离! 相关推荐 1 one light year is the distance that light travels in one ...
根据“That’s doesn’t make much sense because ‘light year’ has the word ‘year’, which is normally a unit of time. Even so, light years show distance.”可知“光年”有“年”这个词,通常是一个时间单位,但是光年显示距离,所以这似乎说不通,故此处划线部分意为“说得通”。故选D。 (2)题...
Definition: Light-yearA light year, abbreviated ly, is the distance light travels in one year: roughly 9.46 × 1012 kilometres (9.46 petametres, or about 5.88 × 1012 (nearly six trillion) miles). More specifically, a light year is defined as the distance that a photon would travel, in ...
A “light year" is a distance unit in astronomy. 1 light year i approximately 9 500 000 000kilometres. In scientific notation, it can be written as ( ).(A) 9.5*10^8 kilometres(B) 9.5*10^9kilometreS(C) 9.5*10^(10)kilometres(D) 9.5*10^(11)kllometres ...
A light year is the distance that light travels in one year. Which of the following is not a correct description of a light year? A. It is a measure of distance. B. It is about 9.46 trillion kilometers. C. It is equal to one astronomical unit. D. It is a very large distance. ...
A Light-Year is a Measure of Distance, Not TimePosted by: Josef Essberger Superb demo by NASA NASA demonstrate in 1 minute 46 seconds just how far a light year is. Pretty far…Posted by Josef Essberger April 2019 Contributor: Josef Essberger, founder of EnglishClub. Originally from ...
To find the distance of a light-year, you multiply this speed by the number of hours in a year (8,766). The result: One light-year equals 5,878,625,370,000 miles (9.5 trillion km). At first glance, this may seem like an extreme distance, but the enormous scale of the universe ...
期刊摘选 展开全部 英英释义 Noun 1. the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers 行业词典 天文学 光年天体距离的一种单位。1光年等于光在真空中一年内行经的距离,约等于10 13 km。
How far is alight-year? It might seem like a weird question because isn’t a ‘year’ a unit of time, and ‘far’ a unit of distance? While that is correct,a ‘light-year’ is actually a measure of distance. A light-year is the distance light can travel in one year. ...
结果一 题目 12. A light year is the distance light travels in one year at aspeed(speed) of 299,792 kilometres per second. 答案 答案见上相关推荐 112. A light year is the distance light travels in one year at aspeed(speed) of 299,792 kilometres per second....