Quick question about temperature

Dagreatoneakakam · 05-07-2003, 03:08 PM

I just need to know this because I can't find a thermometer. How hot do you think it would get inside of a thin plastic cup that is sitting right on top of a 15 watt bulb?

Maple Leafs · 05-07-2003, 03:10 PM

Why do I get a feeling that local fire inspectors are going to be entering this post into evidence soon?

Franklinnoble · 05-07-2003, 03:11 PM

Chances are you'll melt the cup before someone gives you a correct answer on here... try not to electrocute yourself in the process.

Craptacular · 05-07-2003, 03:14 PM

I'm assuming you mean an incandescent bulb, not a fluorescent one.

Bee · 05-07-2003, 03:19 PM

What's in the cup? How long has it been on the bulb?

moriarty · 05-07-2003, 03:21 PM

Well, you'll need to know mass of cup and the heat capacity of styrofoam, and the starting temperature. Ignoring outside cooling factors (such as wind, etc., inefficencies in heat transfer, etc), you could calculate the temp by: q = m Cp dT.

Q = 15 watts or 15 joules per second.
M = mass of the cup
Cp = heat capcity of styrafoam.
dT = Temp final - Temp initial

You were serious right?

Franklinnoble · 05-07-2003, 03:27 PM

Let me guess... you're about to take a drug test and you want to know if the bathroom light bulb will be enough to heat the urine to the point of eradicating any trace of all that crank you did last weekend, right?

Franklinnoble · 05-07-2003, 03:28 PM

Quote:

Originally posted by Maple Leafs
Why do I get a feeling that local fire inspectors are going to be entering this post into evidence soon?

^^^^^
QOTM material, baby...

moriarty · 05-07-2003, 03:35 PM

Quote:

Originally posted by Franklinnoble
Let me guess... you're about to take a drug test and you want to know if the bathroom light bulb will be enough to heat the urine to the point of eradicating any trace of all that crank you did last weekend, right?

Hopefully he learned his lesson from Charles Rogers ... you need to add MORE water, not boil off the existing amount.

Dagreatoneakakam · 05-07-2003, 04:17 PM

No, I found a baby bird and I'm keeping it in there (temporary).

moriarty · 05-07-2003, 04:22 PM

Ahh, I like Fried Chicken too.

I normally get mine from KFC though.

Franklinnoble · 05-07-2003, 04:22 PM

Quote:

Originally posted by Dagreatoneakakam
No, I found a baby bird and I'm keeping it in there (temporary).

Awww... that's sweet.

Have you tried using the microwave?

KWhit · 05-07-2003, 04:36 PM

Just stick it in your pants. It should be warm enough in there.

tucker342 · 05-07-2003, 06:31 PM

hahaha

moriarty · 05-07-2003, 06:54 PM

Quote:

Originally posted by KWhit
Just stick it in your pants. It should be warm enough in there.

Honestly Doctor, I was just trying to keep my chicken warm ... it was a one in a million shot.

Dagreatoneakakam · 05-07-2003, 09:37 PM

Well my stint as a mother has come to an end. I had to have a proper burial for my son/daughter.

Dagreatoneakakam · 05-07-2003, 09:39 PM

Well my brief stint as a mother has come to an end. I had to have a proper burial for my son/daughter.

Mantle2600 · 05-07-2003, 09:59 PM

Well his brief stint as a mother has come to an end. He had to have a proper burial for his son/daughter.

moriarty · 05-07-2003, 10:11 PM

I don't know why, but I suddenly feel very sad.

QuikSand · 05-07-2003, 10:26 PM

Well, kam, it was a great try, anyway.

05-07-2003, 03:21 PM	#6
moriarty College Starter Join Date: Nov 2000 Location: A negative place	Well, you'll need to know mass of cup and the heat capacity of styrofoam, and the starting temperature. Ignoring outside cooling factors (such as wind, etc., inefficencies in heat transfer, etc), you could calculate the temp by: q = m Cp dT. Q = 15 watts or 15 joules per second. M = mass of the cup Cp = heat capcity of styrafoam. dT = Temp final - Temp initial You were serious right? Last edited by moriarty : 05-07-2003 at 03:22 PM.

05-07-2003, 04:22 PM	#11
moriarty College Starter Join Date: Nov 2000 Location: A negative place	Ahh, I like Fried Chicken too. I normally get mine from KFC though. Last edited by moriarty : 05-07-2003 at 04:36 PM.

05-07-2003, 09:59 PM	#18
Mantle2600 High School Varsity Join Date: Oct 2000 Location: The Dawg Pound	Well his brief stint as a mother has come to an end. He had to have a proper burial for his son/daughter. __________________ Member of the Underground Browns. Cavs. Tribe. Buckeyes. Period.

05-07-2003, 03:10 PM	#2
Maple Leafs Coordinator Join Date: Jan 2002	Why do I get a feeling that local fire inspectors are going to be entering this post into evidence soon?

05-07-2003, 03:11 PM	#3
Franklinnoble Banned Join Date: Jul 2002 Location: Placerville, CA	Chances are you'll melt the cup before someone gives you a correct answer on here... try not to electrocute yourself in the process.

05-07-2003, 03:14 PM	#4
Craptacular College Starter Join Date: Oct 2001 Location: The Mad City, WI	I'm assuming you mean an incandescent bulb, not a fluorescent one.

05-07-2003, 03:19 PM	#5
Bee Pro Starter Join Date: Oct 2000 Location: Fairfax, VA	What's in the cup? How long has it been on the bulb?

05-07-2003, 03:27 PM	#7
Franklinnoble Banned Join Date: Jul 2002 Location: Placerville, CA	Let me guess... you're about to take a drug test and you want to know if the bathroom light bulb will be enough to heat the urine to the point of eradicating any trace of all that crank you did last weekend, right?

05-07-2003, 04:17 PM	#10
Dagreatoneakakam n00b Join Date: Feb 2002 Location: Philadelphia	No, I found a baby bird and I'm keeping it in there (temporary).

05-07-2003, 04:36 PM	#13
KWhit Coordinator Join Date: Jan 2003 Location: Conyers GA	Just stick it in your pants. It should be warm enough in there.

05-07-2003, 06:31 PM	#14
tucker342 Pro Starter Join Date: Mar 2002 Location: Iowa City, IA	hahaha

05-07-2003, 09:37 PM	#16
Dagreatoneakakam n00b Join Date: Feb 2002 Location: Philadelphia	Well my stint as a mother has come to an end. I had to have a proper burial for my son/daughter.

05-07-2003, 09:39 PM	#17
Dagreatoneakakam n00b Join Date: Feb 2002 Location: Philadelphia	Well my brief stint as a mother has come to an end. I had to have a proper burial for my son/daughter.

05-07-2003, 10:11 PM	#19
moriarty College Starter Join Date: Nov 2000 Location: A negative place	I don't know why, but I suddenly feel very sad.

05-07-2003, 10:26 PM	#20
QuikSand lolzcat Join Date: Oct 2000 Location: Annapolis, Md	Well, kam, it was a great try, anyway.

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