A string of length 4 m consists of two sections of equal length. The left has mass per unit length 0.00022 kg/m, while the right has a mass per unit length 0.00066 kg/m. Tension in the string is 790.5N/m. Find the speed at which transverse wave pulses travel in the left section. Find the speed at which transverse wavepulses travel in the right section. Find the time required for a pulse to travel from one end of the string to the other.