Answer:
Part a)

Part b)
t = 12 s
Explanation:
Part a)
Tension in the rope at a distance x from the lower end is given as

so the speed of the wave at that position is given as

here we know that

now we have


Part b)
time taken by the wave to reach the top is given as




Answer: The motion of the object will remain the same
Explanation:
C. Members of the same species work together for survival
It should be C. If the object is denser than the fluid, it will sink. If it isn't, it will float
Answer:
The answer to this question is False