Answer:
Volume of wood is 68-50 = 18 cm³
Explanation:
<h2>Hope it helps you</h2>
The water would be because however much salt you add the water rises
<h2>
The secondary voltage is 115 V.</h2>
Explanation:
The primary to secondary voltage ratio is given as 4:1 .
That is

We need to find what is the secondary voltage if the primary voltage is 460 volts.
That is

Substituting in ratio equation

The secondary voltage is 115 V.