He should a step-up transformer with k=220/120=1.83 so output coil must have 240*1.83=440 turns
Answer:
The value of spring constant is 266.01 
Explanation:
Given:
Mass of pellet
kg
Height difference of pellet rise
m
Spring compression
m
From energy conservation law,
Spring potential energy is stored into potential energy,

Where
spring constant, 



Therefore, the value of spring constant is 266.01 
The answer is B high pressure.
Answer:
B. Acidic
Explanation:
Neutral an Basic solutions wouldn't create any reaction