Qualification > Sciences
Physics Help HERE ONLY !!
astarmathsandphysics:
--- Quote from: Alk on June 02, 2009, 05:38:08 pm ---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
--- End quote ---
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:
--- Quote from: simply.me on June 02, 2009, 05:33:21 pm ---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
--- End quote ---
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
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