what dose AM And PM mean?
142458
Ante meridian and post meridian.\nLiterally, before half and after half.
462808
I've head of am IM but not a PM .. ???
578059
The above reply is right, "MM" means million in this context. One M is a thousand. BTU is British thermal unit, for energy.  MMBTU/hr a common spec for boilers.
388547
dose=does and what subject are studying?  LOL!
234122
MB is megabytes, a unit of storage space.  MH is nothing unless you mean MHz which is MegaHertz which is a unit of frequency.  In other words, apples and oranges
279538
In general, a transmitted signal can be described as s=A*cos(omega + phi).  In AM modulation, you change the amplitude "A".  In FM, you modify the fundamental frequency, omega.  In PM, you modify the phase, phi.\n\nPhase Modulation is heavily used in digital communications.  Modems, satellite TV, GPS, and Wireless LANs (802.11a/b/g) all use variants of binary and quadrature phase shift keying.
440454
the R.A.M. is the average mass of an atom of an element, taking account of its natural isotopes & their percentage abundance.\neg: the R.A.M. of CaCl2  :\n     the exam paper will give you the the R.A.M. s of Calcium-40 & Chlorine - 35.5,so the answer is,\n         = (1*40)+(2 * 35.5)\n         = 40+71\n         = 111\n     hope this helped.Cheerz!
244387
They are abbreviations of Latin expressions.  Ante Meridian and Post Meridian.  Before and After Noon.
660198
18\nbecause: mean = sum of items/number of items\nso,      mean = 19+18+14+19+20/5\nand      mean = 18\n\nand about mode( =most common number)\nit is 19(you have 2 times 19 and all the other numbers come up only one time, so it has to be 19)\n\nHope,that was helpfull.
641310
AM=(a+b)/2\nGM=square root of ab\nHM=2ab/(a+b)\nAM-GM=(a+b-2*square root of ab)/2\n     =(square root of a-square root of b)^2/2\nsince it is square therefore it is positive\nAM>GM\nAM*HM=GM^2-(i)\nAM>GM,thenGM>HM otherwise the equation(i) is not possible.\nAM>GM>HM
293249
Yes it should be in Caps. This is because its an acronym of Ante Meridian (AM). All acronyms are typically written in Caps. If you are wondering, PM is Post Meridian.
162120
Between 10 pm and 12 am
1099051
01:01:42 PM\nhr:min:sec.\n\nTo distinguish between am and pm is if the hour number is larger than 12 it's pm. Just subtract the hour and you get the normal hour.\n\nIf it's smaller than 12 it's am
1147769
10:00am to 5:00am, the confusing part doesn't come in until after 12:00pm (noon).  1:00pm is 1300, 2:00pm is 1400, etc.  Up to that point, just put a : before the last 2 digits.
741946
Very easy:  \nPPM is equivalent to μg/mL (That is micrograms per milliliter)\n1 PPM = 1 μg/mL\n(the "μ" in micrograms is the greek letter mu)\n\nSo, a 10 PPM solution is 10 micrograms dissolved in 1 mL of water.  (or 10 milligrams dissolved in one liter (which is the same as10,000 micrograms in 1,000mL))\nSo, a 50 PPM solution is 50 micrograms dissolved in 1 mL of water.  (or 50 milligrams dissolved in one liter)\nEtc.\n\nPPM concentrations are just simple ratios, μg to mL.\n1 microgram = 0.000001grams\n\nThe volume (mL) always refers to WATER.  \nYou'll dissolve X amount of each of you reagents in X amount of water.
913486
Actually a good many countries around the world use the 24 hour clock system. Then there isn't a need to say AM or PM, you know whether its day or night. Also the military begins attacks, movements and such on Greenwich mean time, its a town in Britain. And its used so everyone that aware of an operation knows what time it begins regardless of what part of the world they are in.
641366
Ante Meridiem- Latin for before noon.\nPost Meridiem- Latin for after noon.