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cutting is allowed although not appreciated, if ur anser is ligeble, u'll get da marx
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beststriker said:how arrows were to be drawn in compasses in the section A part of magnets. i dine like this...
----> NN <----
is this right......
Parachutist was falling with a constant speed..What is the principle energy conversion and the answer is potential to heat because since speed is constant KE would also be constant at that timeUxaiR said:can any one tell me the exact Question statement of the parachute energy conversion .??
hassam said:easiest exam i took in my lifetime!
INSHALLAH a star pakka.pra 4 me i ll pray 4 u peple also
Mobeen said:beststriker said:how arrows were to be drawn in compasses in the section A part of magnets. i dine like this...
----> NN <----
is this right......
after the ppr sum1 told me we had draw field lines also .. i dont think so ..was it askd to do ?
Mobeen said:hey i dont think so tht it was PE to heat .. when falling frm a height PE always converts into KE ..
jafar said:i dnt agree wid u hamid cuz when there is no acceleration KE will be constant which means that PE is not converted into KE nd is only converted into Thermal energy cuz of friction....
nd yea u r rite bout da curve....
graph exactly like pressure with volumepunctualpunk said:so....about the principal energy changes involved....I selected the potential to heat option....That was because of a number of reasons..First of all, the speed was constant. the parachute had been opened and he was now just falling constantly....not like some sort of a free fall. secondly,
K.E= 1/2 x m x (v)^2
If velocity is constant and mass is same, then kinetic energy would NOT increase!
So the answer was potential to heat.
Secondly, wanted to ask about the mcq concerning pressure and area...How did the graph look like?
And oh....in the final question of paper 2, the current and voltage both increased. Current increases because as the temperature rises, resistance of the thermistor falls. This causes a NET decrease in resistance of the circut which caused an increase in the current as the voltage remained constant.
jafar said:@punctualpunk: the graph will be of inversly propotional as pressure is inversly propotional to area
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