4. En la siguiente fórmula física dimensionalmente correcta, indicar las dimensiones de x. b.t: x = A. e-b. W sen (W. t)
Donde: A: longitud, e: constante numérica (e=2,71828...), W: velocidad angular.

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)