The answer is B. helium-filled balloon, since sound travels the slowest through gases.
Answer:_COC1\/2+_H\/2O>_HC1+CO\/2
Explanation:
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Answer:
Option C
Explanation:
According to the formula
So
If we use wide wire we increase the area of cross section so resistance decreases
I believe this is it
The centripetal force is given by
F = mv^2 / r
When v' = v/2,
F' = mv'^2/r = m(v/2)^2/r = mv^2/4r = F/4.
So the centripetal force is divided by 4.