Feb 17, 2012 · The HP 15C is less than $100, and it was THE killer scientific calculator for engineers and chemists back in the '80s. Fits in a shirt pocket and does everything its larger predecessors did. I'm tempted to order one.

Feb 18, 2010 · HP has a 15c emulator for the iPhone. It is either $29 or $39, but that is way cheaper than what they go for on ebay. I'd buy more than one 15c, 32sII or 42S if they were ever reintroduced.

Feb 24, 2007 · RPN rules. When you have become familiar with that notation, you will zip through calculations that used to seem tedious. I got my first HP back in '76 or so, when I went back to college to take some courses that related to my jobs in soils testing, materials inspection, etc.

Oct 11, 2006 · I remember not being able to financially justify trading up to an HP 15C, since my 29C did everything I needed, but I really liked the 15C. It's financial cousin, the HP 12C is still quite commonly seen in banks, real estate offices, investment counselors' offices, etc.

May 12, 2012 · I'm trying to calculate the cube root of -8, for example, so I type in these buttons: 8 CHS (change sign) Enter 3 1/x y^x But it gives me an...

Sep 26, 2012 · I thought of the TI-89 Titanium. But then I remembered that HP had a good line of calculators - at least they did. I do not think they have maintained their quality quite so well as they used; but their latest offering, the 50g, was quite impressive. What turned the tide for me to switch from TI to HP was the Daniel Doherty review on Amazon. I ...

Feb 7, 2009 · This is the way the formula is written in my book; Gross Thrust (Static) F (gross) = m dot (V2-V1) V2-V1 Final velocity – initial velocity.

Sep 15, 2019 · My attempt at the solution goes as follows: power = work / time power = (distance * force) / time power = (2640 ft * 2000 lb) / 6 seconds = 880000 ft lb / sec horsepower = 880000 ft lb/sec / 550 ft lb/sec = 1600 hp however i do not know if this is correct

Nov 9, 2010 · Would it also apply to removing airflow restrictors such as sound attenuators downstream of the fan in the ductwork? Also, is the 6356 just a coefficient to get power into units of HP based on inputting pressure in units of "h2o and flowrate in …

May 25, 2013 · Datasheet Graph shows torque peak ~ 13.6 ft lbs at maybe 2750 RPM which calculates 7.12 hp, just about what the dotted hp line on same graph shows . and at output of 14.5 volts and 150 amps, which is 2175 watts, which is 2.91 hp, that's 41% efficiency. 41% seems a bit low if typical is 50 to 60:.