Answer:
“It's that loss of moisture from upper layers of the skin that causes it to dry out.” Winter air is often dry, and the air that comes out of indoor furnaces can be even worse. However, dry skin can make its mark at other times of the year, too.
Explanation:
Ok so the PH for each solution will be
<span>1.) 1.638
2.) 5.2
3.) 12.524
This is found using the formula: </span> pH<span> = - log [H</span>3O+].
And the pOh for each one will be
<span>1.) 12.362
2.) 8.8
3.) 1.4763
This is found by the formula </span>pOH = -log10[OH-<span>]
</span>Hope this is useful
16.7
Explanation:
Given parameters:
Force applied to Jack = 120N
Force produced by Jack = 2000N
Unknown:
Mechanical advantage of jack = ?
Solution:
Mechanical advantage is the ratio of force produced by the device and the force applied on it.
It is used to access the performance of a machine.
M.A = \frac{force output}{force input}
Now input the parameters;
M.A = 
M.A = 16.7
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Answer: The porpoise would hear its echo first because sound travels faster in the water than in air.
Explanation:
