Acid it is i believe........
Energy transfer the energy from the tuning fork is being transferred to the guitar<span />
Answer: force = mass x accelegation
Explanation: 15x3 = 45 N
Explanation:
It is given that,
Velocity in East, 
Velocity in North, 
(a) The resultant velocity is given by :

(b) The width of the river is, d = 80 m
Let t is the time taken by the boat to travel shore to shore. So,


t = 16 seconds
(c) Let x is the distance covered by the boat to reach the opposite shore. So,


x = 48 meters
Hence, this is the required solution.