Answer:
Volume of wood is 68-50 = 18 cm³
Explanation:
<h2>Hope it helps you</h2>
The electrical energy consumed in one year by using the light bulbs is 8,760 kWh.
The given parameters:
- Number of light bulbs = 10
- Power consumed by each bulb = 100 W
- Time of energy consumption, t = 1 year
<h3>What is electrical energy?</h3>
This is the electric power consumed or dissipated at a given period of time.
The electrical energy consumed in one year by using the light bulbs is calculated as
E = Pt

Thus, the electrical energy consumed in one year by using the light bulbs is 8,760 kWh.
Learn more about electrical energy here: brainly.com/question/60890
Since isotopes of any given element all contain the same number of protons,