I believe the answer would be oxygeon deficit.
If it i hot it makes it easy to clean
Answer:
<h2>2500 N</h2>
Explanation:
The weight of the object can be found by using the formula

w is the workdone
d is the distance
From the question we have

We have the final answer as
<h3>2500 N</h3>
Hope this helps you
The water is likely to be dirty or not clear enough. I mean, if you through a key into the body of water, you can't see the key at the bottom of the water body because of impurities which make the water look dirty or not visible or transparent enough.
Potential energy
represented by PE=1/2 kx^2
where k is the spring constant and x is the displacement