2012年2月17日 · 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 …

2010年2月18日 · 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 …

2007年2月24日 · 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 …

2006年10月11日 · 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 …

2012年5月12日 · 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...

2012年9月26日 · 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 …

2009年2月7日 · 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.

2019年9月15日 · 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 …

2010年11月9日 · 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 …

2013年5月25日 · 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 …