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ALL PHYSICS DOUBTS - POST HERE !!

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The Golden Girl =D:

--- Quote from: Ari Ben Canaan on April 05, 2010, 02:11:35 pm ---Okay never mind that.


Heres my next query. For a D.C. output how should I draw the waves ? The first picture (top) or second one (bottom) ?


--- End quote ---



i am srry to say that guys u r wrong ..the right one is the second one ....but as for the first one it's when a diode is used "which changes ac to dc "  ;)

nid404:
the golden girl is right...it's the 2nd diagram....i dunno how i missed this 1... :-\

holtadit:
How is the answer c ???

Amr Fouad:

--- Quote from: Ari Ben Canaan on April 16, 2010, 12:16:28 pm ---How is the answer c ???

--- End quote ---

Thermal capacity depends on 2 things:

1. mass of object
2. Type of material

we will not use number 2 as all are made of copper..however, we will use point 1..

a tube is hollow, while a rod is not, therefore a rod is heavier, ie greater mass..

therefore, the answer should be A or C..and since C is heavier,

C is the correct answer..

got that Ari?

Amr Fouad:
plus the question asks "which ROD.."

lol..so it shud be A or C  :)

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