Sound is produced by vibrations. What is the speed of sound in air? A. 340 meters per second. B. 340 kilometers per hour. C. 3400 meters per second. D. 3400 kilometers per hour. 相关知识点: 试题来源: 解析 A。解析:声音在空气中的传播速度是 340 米每秒。选项 B、C、D 速度错误。
Speed of Sound: The speed of sound is based on the medium in which it moves and the temperature of the medium. In dry air at 20 degrees Celsius sound moves at 343 m/s. Answer and Explanation:1 The speed of sound in miles per hour at 20 degrees Celsius in dry air is about767.2 mi...
声速是多少 声速是多少的英文翻译,声速是多少用英语怎么说,怎么读 读音:/shēng sù shì duō shǎo/ 声速是多少的英文翻译 网络What is the speed of sound 双语例句 单词专题
1. What's the speed of sound at 2500 meters above sea level?相关知识点: 试题来源: 解析 285.3米/秒 声音速度受温度和气压影响。在2500米海拔,气压约为海平面的0.75倍,温度约为-2摄氏度。根据公式c = 331.5 + 0.6T,在-2摄氏度时,声音速度约为330.3米/秒。由于声音速度与气压平方根成正比,因此在...
求翻译:what is the speed of sound?是什么意思?待解决 悬赏分:1 - 离问题结束还有 what is the speed of sound?问题补充:匿名 2013-05-23 12:26:38 什么是 sound? 的速度热门同步练习册答案初中同步测控优化设计答案 长江作业本同步练习册答案 名校课堂助教型教辅答案 U计划学期系统复习答案 同步练习册...
What is the speed of a car if it travels 200 meters in 30 seconds? A hungry whale uses echolocation to find its dinner. Suppose the fish is 505 meters from the whale and the whale receives the echo 0.78 seconds later. a) What was the speed of the sound wave? b) The wavelength of...
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A car starts from rest, speeds up with constant acceleration, and travels 1000 meters in 10 seconds. What was the acceleration of the car in m/s2? The speed limit on some interstate highways is roughly 120 km/h. What is this in meters per second?
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The speed of sound in air is A330kms−1 B330kmh−1 C330ms−1 D300ms−1Submit The speed of sound in air is A220 m/s B232 m/s C332 m/s D432 m/sSubmit A girl standing 150 m in front of tall building, fires a shot using a starting pistol. A boy standing 350 m behi...