The greater the temperature, the greater the volume - this is Charles's law, said by Jacques Charles, a French inventor, scientist, and mathematician.
A is the answer for the problem
The wave length becomes shorter and the pitch becomes higher
Answer:

Explanation:
Given that
Height = h
Radius = R
From energy conservation

At point B
The minimum speed to complete the the circle

So the kinetic energy at point B




Without falling off at the top (point B)



