Answer:
Any medium solid, liquid or gas is required for sound waves to travel.
Explanation:
A sound wave requires a medium to travel. Sound waves are mechanical waves that is why these waves require a medium to travel. Sound waves can travel through solids, liquids, and gases.
In solids, the particles of the medium are closely packed together as compared to liquids and gases. In liquids, particles are less tightly packed and almost negligible in gases.
Therefore sound waves produce vibration in the dense or solid medium. Denser the medium faster the sound waves travel. However sound waves can not travel through empty space.
<span>When the difference between two results is larger than the estimates error, the result is</span>
The answer is d because that’s the lowest velocity and it’s a straight line showing it’s not going faster
' B ' is the only choice on the list that tells you a definite place, where you could go to pick up the object or meet somebody.
But in order to use it, you also have to know where the origin of coordinates is ... the point (0, 0) .
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No, I'm wrong about that. You have to know where SOME other point is, but that doesn't have to be (0, 0).
This is the reason why dimensional analysis is very important. It is a technique used that only involves operations with units. You disregard the quantities first. The concept is to make sure that the final answer of your calculations must be consistent of what is asked. Similar units are cancelled when they appear both on the numerator and denominator side. If the mathematicians used this, they could've prevented the crash from happening. What good would the calculations bring if you are not consistent with the units?
