Answer:
The speed of transverse wave will be 28.2842 m/sec
Step-by-step explanation:
We have given length of the card = 75 cm = 0.75 m
Tension on the card = 320 N
Mass of the card = 120 gram = 0.12 kg
So linear density

We have to find the speed of the transverse wave
Speed is given by


So the speed of transverse wave will be 28.2842 m/sec