[ sqrt (3),2] -|||-C. [ -2,-sqrt (3)] D. [ -2,-sqrt (3)] cup [ sqrt (3),2]
sqrt (2) D.2如,两相干波源Sl和S2向右发出两列振幅都为A0,波长均为的平面简谐波,两波源相距,Sl的相位比S2超前.则看看看看
sqrt (2)-|||-C. sqrt (34)-|||-○ D. sqrt (2)
-3sqrt (2) C. -2sqrt (3) D. -1
sqrt (2) C. dfrac (sqrt {2)}(2) D.1
sqrt (2)pi :2 C. sqrt (2)pi :4 D. sqrt (2)pi :8
sqrt (dfrac {3g)(l)}-|||-C. sqrt (dfrac {3g)(2)}-|||-D. sqrt (dfrac {8)(3)}
C. D. sqrt (2gH) E.2AgH-|||-sqrt (2gH) sqrt (2{A)_(g)H}一盛水大容器,水面离底距离为H,容器的底侧面有一面
sqrt (2)pi -|||-C. dfrac (sqrt {2pi )}(4)-|||-D. dfrac (sqrt {2pi )}(8)
+x+sqrt (2)=0 C. -x-sqrt (2)=0 D.