Physics Help HERE ONLY !!

[IGfab4]

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

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]

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

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.

bt y 2 pump water to higher level storage n ya hmm can u solve d whole q 1

[IGfab4]

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

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.

bt y 2 pump water to higher level storage n ya hmm can u solve d whole q 1

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]

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.

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.

[Shogun]

yup thts all.

but do stress onE=mlf and mlv
                     E= m *C * temp change
most question come based on these..

[simply.me]

can ne1 .. explain about logic gates n how to draw them ..

i need to now how to draw the diagram .. m/j 2008 Q.8a

[goin4dakill]

yup thts all.

but do stress onE=mlf and mlv
                     E= m *C * temp change
most question come based on these..

What is mlv??

[Alk]

is the DC generator included ? and if yes plzz i need someone to explain it to me..
and i also need someone to explain lenz law!
Thanks

[Shogun]

yup thts all.

but do stress onE=mlf and mlv
                     E= m *C * temp change
most question come based on these..

What is mlv??

its for latent heat of vapourisation..

[astarmathsandphysics]

is the DC generator included ? and if yes plzz i need someone to explain it to me..
and i also need someone to explain lenz law!
Thanks

A coil of wire rotating in a magnetic field has a current induced in it. Every time the loop completels a half turn the direction of the current in the loop changes but the loop makes contact with a commutator, and the points of contact also change every half turn so the direction of the current as it exits the generator is unchanged

http://www.koehler.me.uk/animation/e_and_m_dc_gen_1.htm

[astarmathsandphysics]

can ne1 .. explain about logic gates n how to draw them ..

i need to now how to draw the diagram .. m/j 2008 Q.8a

all you  need

http://en.wikipedia.org/wiki/Logic_gate

[astarmathsandphysics]

I think mlv should be ml where m=mass abnd l = specific latent heat of vapourization

[ny]

what is nuclear fusion and nuclear fission?

[astarmathsandphysics]

nuclear fusion is what happens to make stars shine eg 4p¹⁺>He²⁺+2e⁺ atoms fuse to make bigger atoms

fission is what happens in atom bombs eg ²³⁶U>¹⁴¹Ba+⁹²Kr+3¹n atoms split to make smaller atoms