<span>If we pollute the fresh water we have, there will be a shortage of clean drinking water in the future.</span>
Answer:
False
Explanation:
A book resting on a shelf has no potential energy relative to the shelf, since it has height of zero meters relative to the shelf.
Answer:
Scalar quantity is the Physical quantity expresed only by their magnitude.
The length of the shortest pipe which is l2 will be 0.018m
<h3>
What is Length?</h3>
This is defined as the measurement or extent of a substance from end to end. The formula is shown below:
L = v/f where v is speed , f is frequency
f1 = 25hz , f2 = 19khz
The length for both sides is seen below:
l1 = 343/25 = 13.72m
l2 = 343/19000 = 0.018m.
The length of the shortest pipe is therefore 0.018m.
Read more about Length here brainly.com/question/24259483
