need math help!

gerry gill · October 2009

Hi Everyone-- i have a math question that my public schooling doesn't help me with..hehe.. when figuring the head loss of a hydronic pipe the formula is r(f)1.75 , with the 1.75 as i think its called an exponent in the upper right hand corner position..siggys example uses .29609 x 5 gpm with that 1.75 thing equals 4.95 feet of head..what keys do i use on a scientific calculator to do this? thats my question..thanks.

siggy · October 2009

math help

Gerry,

Raising a number to a power using a scientific calculator is as easy as multiplication - only it uses a different key.

Say you want to raise 2 to the 1.75 power.

Enter 2 on the display, press the key that has a Y with a little x next to it - just to the upper right .

Then enter 1.75 on the display and press the = sign.

The correct answer for 2 raised to the 1.75 power is about 3.36359.

Some calculators operated a bit differently, but any scientific calculator, even one you buy in Staples for 10 buck, has the ability to do this.

Hope this helps

siggy

CC.Rob · October 2009

windows calculator

In the standard Windows calculator, try this:

Go to 'View' and select "Scientific'.

Following Siggy's example,

type the number 2.

now hit the x^y button (between the sin and log buttons)

type the number 1.75.

now hit the = button.

answer is 3.36359

gerry gill · October 2009

Thanks Siggy!

I'm reading your Modern Hydronics Heating textbook trying to get a better handle on pump sizing..or i should say better pump sizing..better than the ''well this pump worked well last time method'' hehe..thanks for the quick answer..Great book by the way!

gerry gill · October 2009

Thanks CC

I was wondering where to find one of those calculators..math has always put the wipping on me..

need math help!

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