I believe all of these would be known as specific phobias.
Wood because it is natural and we use it for furniture but we also burn it for energy.
Answer:
P = I²r
Explanation:
ε= IR + Ir
where r is the internal resistance
Since your constantly changing the height of the cup (your independent variable) then this causes the distance it travels to change (your dependent variable) so it’s basically because the slope is changing as well.