The energy loss caused by abrupt enlargement is expressed by:
1
\( \left(\frac{V_1-V_2}{2}\right)^2 \)
2
\( \left(\frac{V_1-V_2}{2 g}\right)^2 \)
3
\(\left(\frac{V_1-V_2}{g}\right)^2 \)
4
\(\left(\frac{V_1-V_2}{\sqrt{2 g}}\right)^2\)
5
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