If it's zero degrees outside today and it's supposed to be twice as cold tomorrow, how cold is it going to be?
142627
First we must use the Kelvin scale as is the only absolute scale starting from 0. You have quantified the amount of cold so you must use an asbolute scale. Kelvin measures the absolute temperature with 0 representing NO kinetic motion whatsoever of the molecules. Kinetic motion is another way of defining temperature. That said here we go:\n\n0 degrees F is ~255K so half of that is 122.5K which is -233.57 degrees F. \n\n0 degrees C is ~273K and half of that is 136.5K which is -136.5 degrees C. \n\nNumbers are all approximate.\n\nAlternatively, you can set an arbitrary definition for cold say 40 degrees F which is 278K. If its 255K (0 deg f)today, then you take the difference between 278 and 255 and multiply it by 2 and you get 46K. Substract the difference from 255 and you get 204K which is -92 deg farenheit.\n\nI hope I didnt lose you yet but I actually had fun doing this ;)!
1534
The higher level and lower level and also the mid level of the atmosphere must be 32 degrees, if the upper level and the mid level is 33 or higher, den most likely it will be freezing rain.
1135010
It's actually winter here butthe funny thing is that it's still about 85oF. 90oF really isn't very warm.
355543
It is to double the C degrees then add 30.  You're right, it's not exact, but pretty close for numbers that could be weather temperatures.
30315
Well absolute zero is -273.15 C or so, and we have gotten very close to that (within about a tenth of billionth of a degree C). We cannot get any colder than absolute 0. \n\nThere is such a thing as negative temperature, but this is not a case of something being colder than absolute zero, but "hotter than infinite temperature". See the attached web pages.
773772
very cold!!!!!!!!!!!!!!!
602468
Absolute Zero or around 20 K.\n\nMelting point 14.01 K  (−259.14 °C, −434.45 °F) \nBoiling point 20.28 K  (−252.87 °C, −423.17 °F)
600668
If it is 0 deg Centigrade i.e. 32 deg Farrenheit and double the cold i.e. 16 deg F mening -8.9 deg Centigrade
974506
It's absolute zero, where there is no heat, and therefore no movement of particles.  It is -273 C.
284973
-213.8 °F (brrrr).\n\nTemperature is proportional to the kinetic energy of air molecules in motion. At absolute 0, there would be no molecular motion, which is -459.67 °F. Thus 32 °F is 491.67 °F above absoltue zero.  If the molecules have half the energy as that, I suppose it could be considered twice as cold (half as warm = twice as cold?). 491.67/2 = 245.8 °F above absolute 0 and below 32 °F. So 32 - 245.8 = -213.8 :)\n\nUsing the absolute (Kelvin) temperature scale simplifies this calculation because absolute 0 is 0 K.
843698
Hello. I'm in Kentucky and its 36 degrees and clear. Low tonight will be 21. Sure wish it would snow! See ya.
243283
Ice is already frozen, if you mean what temperature does water freeze at, then 32°F or 0°C or 273 K.
690227
Well I do believe it is around -20 or -30 it could be colder by in my  48 years of living here I don't remember it any colder than that. Granted I am not figuring the wind chill factor into the answer that could drop it even further
23928
"Twice as cold" is a nonsensical statement -- there is actually no such thing as "coldness" ... there is only heat.  We humans consider temperatures below a certain point to be "cold" but that is a subjective thing.  Anyway, if it is zero degress today (Celsius ?) then that is equivalent to 273 degrees Kelvin and twice that would be 546 degress Kelvin or 273 degress Celsius -- your hair would catch fire.  (for  zero degrees Farenhiet that would be about 255 degress Kelvin x 2 would be about 510 degrees Kelvin or about 460 degrees Farenheit)
686229
It would be nothing at all...neither, warm neither cold, windy and not windy...it would be like limbo...
143171
I'm in Cincinnati, and in case you're not familiar with the weather here, it changes every day. Today it's about 40 degrees. Yesterday it was 10 degrees. Tomorrow the forecast says 50 degrees. The temperature is supposed to drop back down again this weekend.... so random.
223299
it is going to be really cold, about 5 degrees celcius