I'm a bit confused about why power is transmitted at high voltage for transmission over long distances. This is generally explained as reducing Joule losses, P = I^2 R, and we minimize the current by maximizing the voltage.
However, a trivial re-arrangement using Ohm's law gives also P = V^2...
Bernoulli's equation as I understand it is an expression (or possibly a consequence) of conservation of energy in an incompressible fluid flow.
My question is: how can the "standard" Bernoulli's equation ever apply to an ideal gas?
Wikipedia gives a different version of Bernoulli's...
I'm not sure whether this should go in this forum or the Advanced forum, but here goes.
Homework Statement
Given:
A pion+ decays into muon+ and neutrino,
\pi^+ \rightarrow \mu^+ + \nu
neutrino mass approaches zero, and
the pion is initially at rest.
Problem statement: Use...