This is called Joule's Law. It describes how things heat up due to electric current passing through them
The processes of evaporation and condensation take 7.5 times as much energy as melting or freezing. This is why evaporational cooling will cool the air much more than the melting of snow
The answer is A. waterfall
To be considered as an engine , it should be a Man-made objects that could be used to produce power that creates motions.
From all the options above could be used to produce such power, but the waterfall is not made by mandkind
Answer:
B. q = 2.5 x 10^-1 C
Explanation:
Formula: E = F/q
Given information:
E = 40 N/C
F = 10N
--> q = F/E = 10/40 = 0.25 C
or q = 2.5 x 10^-1 C