Answer:
A
Explanation:
An ion with a negative charge
A pH scale goes from 0 - 14.
7 is in the middle so it is neutral
Answer:
The net force is zero.
Explanation:
Two opposing and equal forces cancel each other out, giving you a net force of zero.
Answer:
power output/transformer efficiency multiply by 100%
Explanation:
derrive the formula from efficiency=power output/power input multiply by 100%
