10:36:42 From Prof. Alexandre Mendes to Everyone:
	F = P
10:36:50 From Prof. Alexandre Mendes to Everyone:
	CS = dF/dP
10:37:04 From Prof. Alexandre Mendes to Everyone:
	unidade CS = N/psi
10:37:18 From Prof. Alexandre Mendes to Everyone:
	U = psi
10:37:40 From Prof. Alexandre Mendes to Everyone:
	u(psi) x CS (N/psi)
11:24:52 From Prof. Alexandre Mendes to Everyone:
	al.mendes@gmail.com