Qualification > Sciences
Physics Help HERE ONLY !!
Shogun:
alright let see hopw can i expalin
16.3 (heat from heater +heat from surrounding) - 2.1(heat from surrounding) = 14.2 (heat from hetaer)
is tht easier...
Ibiza279:
--- Quote from: Shogun on June 03, 2009, 10:45:46 am ---u are correct but see, 16.3g was melted, and from tht 2.1 melted after the heating
so 16.3 and 2.1 are not the mass melted by heater...
the one melted from heater is when 2.1 was melted from the 16.3
--- End quote ---
wo wo wo it clearly says that 16.3 is melted when the heater is on then furthermore 2.1 g is melted AFTER the heater is off meaning the 2.1 g is the ice melted after the heater was turned off
it doesn't say that a total of 16.3 g of ice is melted man im getting tangled up in this question
Ghost Of Highbury:
the markscheme says this too..
but the doubt is that why do v have to subtract 16.3 and 2.1???
its clearly says that when 16.3g was melted...the heater was switched on..
thatsy we assume that there is no heat from the surounding..
??
v have to do this for all experiments right??
astarmathsandphysics:
--- Quote from: Enia on June 03, 2009, 10:15:49 am ---Hi! I had another tiny question (and probably a lot more as I do last minute revision so plz be patient with me).
Can you please explain to be how to predict the direction of alpha, Beta, and gamma radiations in a magnetic field? Thank you :D
--- End quote ---
gamma will be undeflected. Alpha and beta twill be deflected in opposite directions because they are oppositely charged. r=mv/bq so probably the alpha particle will be deflected less but you can also use the left hand rule to find which is whixch
Ibiza279:
--- Quote from: Shogun on June 03, 2009, 10:50:18 am ---alright let see hopw can i expalin
16.3 (heat from heater +heat from surrounding) - 2.1(heat from surrounding) = 14.2 (heat from hetaer)
is tht easier...
--- End quote ---
ah ha now i get it Thanks dude
so its 14.2 g after all :D
n no IGSTUDENT im not pursuing a job in the physics field im planning fer medical inshAllah :) n i jus wanna ace it so i can get an admission in a good university :) n the way i looked up fer the requirements, 7 A* fer university of birmingham really made me think seriously over the whole " enjoy life n study up along side it " issue
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