Answer:
they are used in periscopes,for signalling,in kaleidoscopes,to see round dangerous bends
Explanation:
<span>Creating plasma can be dangerous because of the high amount of ENERGY needed to create it.</span>
Answer:
A vector quantity is a quantity that has both magnitude and direction.
Explanation:
Answer:
Rain came along with lower temps
Explanation:
There was no rain on the warmer days
There were more clouds as the week went on
and the temp decreased during the week so rain came with lower temps is the only one that can be correct
Answer:
The velocity is
Explanation:
From the question we are told that
The frequency of the signal sent out is
The frequency of the signal received is
The speed of sound is
Generally the frequency of the sound received is mathematically represented as
where v is the velocity of the object
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