Answer:

Explanation:
given,
number of cycle complete (f) = 116 cycles per minute
wavelength observed at 11 m in 1.5 m.


v = 7.33 m/s




The wavelength of the wave is equal to 
Aluminum foil (I think, it may not be right)
Answer:
i found something on a website that will help you
Explanation:
do you want me to send you it???
The hand saw would involve more work because it takes more time and effort.