Four waves are described by the following equations centimeters and all the times are measured in...
Four waves are described by the following equations centimeters and all the times are measured in seconds: hich all distances are measured in yA= 10 cos(Ax-4t) YB = 10 cos(5x+4t) yc = 20 cos(-10x+Bt) yo = 20 cos(-Cx-20) Note that A, B, and C are positive constants. a) Which of these waves travel in the +x direction? b) What is A if the speed of yA and ye are the same? c) What is the period of yc if yc and ye have the same speed? d) What's constant C if ya and yo have the same wavelength? e) Which wave/waves has/have the greatest speed?