Qualification > Sciences
Physics Help HERE ONLY !!
IGfab4:
--- Quote from: unknown on June 02, 2009, 04:22:57 pm ---hey need help in 08 nov 1Q b part first variant actually d whole q n also cld neone explain me d 9a ans 2 i cant get it
--- End quote ---
1)B) there is a force(weight actually) acting on the trolley (which is an unbalanced force) which shows that force is directly proportional to acceleration when mass is constant.
and electrical energy is transmitted using high voltage to prevent power loss(and to reduce the current) as an increase in current would result in heat loss.
Shogun:
alright. use right hand flemings rule on something tht generates electricity (ie the the AC generator)
hoever on a normal coil or the generator producing kinetic energy (movement) from elctricity(i.e DC motor)
then use flemings left hand rule. however to find out direction of current or deflection of radiations or wire, use left hand rule.
latent heat of fusion is the hidden temp or the stationary temp at which melting takes place where ice literally (i mean really literally) changes to liquid.
specific heat of fusion is the amount of heat need to do such phenomena as i discussed above. (but really i did no see this included in any of the paper 3 physics)
specific heat capacity is the heant needed to rase 1 degree temp for 1 kg of substance.whereas heat capcity means the whole body it self (i.e the heat needed to raise 1 degree of temp of the whole body.)
notice tht 1 killo is not added in this explanation for heat capacity.
linear expansivity means sunstance expanding with same distance between the degrees calbrited on the thermometor at the same interval. or in short, same distance expanded between all degree interval.
unknown:
--- Quote from: IGfab4 on June 02, 2009, 04:36:26 pm ---
--- Quote from: unknown on June 02, 2009, 04:22:57 pm ---hey need help in 08 nov 1Q b part first variant actually d whole q n also cld neone explain me d 9a ans 2 i cant get it
--- End quote ---
1)B) there is a force(weight actually) acting on the trolley (which is an unbalanced force) which shows that force is directly proportional to acceleration when mass is constant.
and electrical energy is transmitted using high voltage to prevent power loss(and to reduce the current) as an increase in current would result in heat loss.
--- End quote ---
bt y 2 pump water to higher level storage n ya hmm can u solve d whole q 1
IGfab4:
--- Quote from: unknown on June 02, 2009, 04:43:49 pm ---
--- Quote from: IGfab4 on June 02, 2009, 04:36:26 pm ---
--- Quote from: unknown on June 02, 2009, 04:22:57 pm ---hey need help in 08 nov 1Q b part first variant actually d whole q n also cld neone explain me d 9a ans 2 i cant get it
--- End quote ---
1)B) there is a force(weight actually) acting on the trolley (which is an unbalanced force) which shows that force is directly proportional to acceleration when mass is constant.
and electrical energy is transmitted using high voltage to prevent power loss(and to reduce the current) as an increase in current would result in heat loss.
--- End quote ---
bt y 2 pump water to higher level storage n ya hmm can u solve d whole q 1
--- End quote ---
if you store water at ahigh level, then you will have a high gravitational potential energy and can later be used to convert to KE to turn turbines and produce electricity...
goin4dakill:
--- Quote from: Shogun on June 02, 2009, 04:37:59 pm ---alright. use right hand flemings rule on something tht generates electricity (ie the the AC generator)
hoever on a normal coil or the generator producing kinetic energy (movement) from elctricity(i.e DC motor)
then use flemings left hand rule. however to find out direction of current or deflection of radiations or wire, use left hand rule.
latent heat of fusion is the hidden temp or the stationary temp at which melting takes place where ice literally (i mean really literally) changes to liquid.
specific heat of fusion is the amount of heat need to do such phenomena as i discussed above. (but really i did no see this included in any of the paper 3 physics)
specific heat capacity is the heant needed to rase 1 degree temp for 1 kg of substance.whereas heat capcity means the whole body it self (i.e the heat needed to raise 1 degree of temp of the whole body.)
notice tht 1 killo is not added in this explanation for heat capacity.
linear expansivity means sunstance expanding with same distance between the degrees calbrited on the thermometor at the same interval. or in short, same distance expanded between all degree interval.
--- End quote ---
Hey, thanks alot!
umm, well specific heat of fusion..is actually on paper 3- June november :/ Thats why I was wondering..
And i didnt know the equation for it. Im so sorry, one more question.
E= Slf * m
E= m *C * temp change
x= al* temp change (x being increasing length, a being linear expansivity and L bring original length.
Is that all I need to know??
+ rep for u, once i get over the karma thingamabob..in a few minutes i should be able to. :D
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version