Ew = 1/8 (rsF²)?

r=density
s=acceleration
F=height

r = 1.03 x 10 ^ 3 kg m^ -3
s = 9.8m s ^ -2
F = 145cm

Answers:
Firstly you will need to convert the height into metres so that the answer will be in SI units. 145cm=1.45m. Next just plug the values into the formula you have:

Ew=1/8X1.03x10^3X9.8X1.45^2
=2653 N (I have rounded to 4 significant figures). Note the unit is newtons since we have (KgXm^2xm)/m^3s^2)=Kgms^-2 which is newtons (expressed in base units)

Jez
Yes
I am sorry, but I am unable to answer your question because you did not specify what it is that you'd want from these given data. If I am interpreting it correctly, Ew is some sort of "energy", and to solve for Ew, all you have to do is plug in the data given into your formula here, using a calculator, and voila! You have Ew. No magic, not too serious mathematics. :-)
Is the answer, twice on tuesdays and every other friday around 3?

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