皮皮学，免费搜题
登录
搜题
【简答题】
14 一列平面余弦波沿 轴正向传播,波速为5m·s -1 ,波长为2m,原点处质点的振动曲线如题4.14图所示. (1)写出波动方程; (2)作出 =0时的波形图及距离波源0.5m处质点的振动曲线.
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】No one knows where the phrase “Indian summer” came from, or how it got started. We are sure that the phrase was well known by the year 1778, because Crevecoeur, the French writer, wrote about it. Crev...
【单选题】The missing phrase in the incomplete sentence 'The dog's-well, we don't known do we? (paragraph 3) refers to______.
A.
color blindness
B.
depth perception
C.
perception of the world
D.
concern for our perceptions
【简答题】Fill in the blank with a phrase. Since the speed of light is well known, any delay in receiving the satellite's signal can a distance.
【单选题】某患者的血氧检查结果是:血氧容量200ml,动脉血氧含量150ml,动脉血氧分压6.65Kpa,动静脉氧差40ml/L,其缺氧类型是
A.
乏氧性缺氧
B.
血液性缺氧
C.
循环性缺氧
D.
组织性缺氧
E.
混合性缺氧
【简答题】Literature New words: Poet (n): a person who writes poetry Amazingly (adv): in a greatly surprising manner Recognized (adj): well known; famous; admired Tons of (adj phrase): a large quantity of; many...
【简答题】No one knows where the phrase “Indian summer” came from, or how it got started: We are sure that the phrase was well known by the year 1778, because Crevecoeur, the French writer, wrote about it. Crev...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
