Answer:
14,538 trains in the world.
Explanation:
There could be more in the world because they could make more or there could be less??
I think it would definitely be dinvi and the ghosts just because I really relate to that story
Answer:
98,614.82 W/m²
Explanation:

Where;
Q = the amount of heat loss from the pipe
h = the heat transfer coefficient of the pipe = 50 W/m².K
T₁ = the ambient temperature of the pipe = 30⁰C
T₂ = the outside temperature of the pipe = 100⁰C
L= the length of pipe
r₁ = inner radius of the pipe = 20mm
r₂ = outer radius of the pipe = 25mm
To determine the amount of heat loss from the pipe per unit length
From the equation above



= 98,614.82 W/m²