桂电大学物理教学课件

Z-!"#$-#$Ygy{\rx = 4X10 :2cos27i(r + ^) ( S I ) ,”= 3 • lO^cosZBQ + ) (S1)\r1\rej#$Yg.\r@h?? Xi = 4 X 10 2cos(2nt + (SI)\r”=3 X lO^cos(2— + ˜ ) (SI)\r™jk#$`ptuš›=‰vj#‡ˆ?@\rA - T4:+ 3)+ 24cos(c/2  B/4) x 10 2 = 6.48 x 10\r. 4sin(n/4) + 3sin(7r/2) C D =\r(P - arctg = 1.12raJ\r4cos(n/4) + 3cos(n/2)\rj#$YgX = 6.48 X 10 2 cos(2+1.12)\r(SI).\rQR?4. CU+V*WXUYZ-!"#$=&#$Ygy{\rXi =5X 10 2cos$4, + B/3 SI, ”=3 X 10 2sin4Z-B/6 SI\ržŸW#$-= ej#$-#\r$Yg.\r@h”= 3 X 10 2 sin4Z - B/6\r= 3 X 10 2COS4/ - B/6- B/2\r= 3X10-2cos4/-27t/3.\rW#$-=012\rvhj#$-#‡¡?@y{\rA = (5-3)cm = 2 cm, (/)= TC/3\rj#$Yg x = 2 X 102COS(4Z + n/3) (SI)