Qualification > Sciences
ALL PHYSICS DOUBTS - POST HERE !!
Moonlyte:
--- Quote from: Navthep on May 25, 2010, 01:04:16 pm ---Hey guys, i really need help about thermal capacity of an object.
There is one question, June 2006 : P1 : Q16 , the answer is A but i think its B.
Can anyone explain it to me? I have to do the real IG exam tomorrow! (P1)
Thanksss
--- End quote ---
thermal capacity means that it takes a lot of energy to increase the temperature by 1 degrees, no matter what the size is. in Q16, all 4 blocks were given the SAME energy, but A increased LEAST, so A is the answer.
holtadit:
--- Quote from: ang3l on May 25, 2010, 01:08:14 pm ---Can u explain..Wat the high/low thermal capactiy actually means..?
Thx
--- End quote ---
Water has a high thermal capcity. That means it takes A VERY LARGE AMOUNT of heat to raise its temp by 1 degree centigrade.
LOW thermal capacity means only a small amount of heat is needed to cause a LARGE temp rise.
Got it ? Ask again if you haven't.
Navthep:
Um, can anyone explain convection currents? I'm somewhat confused :S
Thankss :D
pS - Thanks to all who explained me thermal capacity. Really mean it. :)
holtadit:
--- Quote from: ang3l on May 25, 2010, 01:07:09 pm ---The answer is A but Why...Arent the electrons in outer orbits? ???
Thx
--- End quote ---
An unstable atomic nucleus with an excess of neutrons may undergo ?? decay, where a neutron is converted into a proton
and an electron
So technically the neutron which is in the nucleus is the source of Beta Radiation ;)
Malak:
--- Quote from: Ari Ben Canaan on May 25, 2010, 01:10:53 pm ---Water has a high thermal capcity. That means it takes A VERY LARGE AMOUNT of heat to raise its temp by 1 degree centigrade.
LOW thermal capacity means only a small amount of heat is needed to cause a LARGE temp rise.
Got it ? Ask again if you haven't.
--- End quote ---
Yeah got it...But one thing...The one with high themal capacity is also the one that cools down quickly right?
thx
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