Qualification > Sciences
Physics Discussion HERE ONLY!
leebux101:
i wrote the answer as aluminium and for the diode one...i did A...i dont noe if the dioide one is correct tho.....
17:
--- Quote from: Bakhtawar on June 07, 2009, 06:58:53 am ---i wrote the answer as aluminium and for the diode one...i did A...i dont noe if the dioide one is correct tho.....
--- End quote ---
no it is steel, they have the same expansivity because aluminum expands more damaging the building and as for the diode yest the ANSWER IS A :D
Christy:
well it is correct ... i asked my tution sir and he has the paper .... he said its A ... and besides its got to be A cause A gives the only direction for red ..... so basically its A
leebux101:
r u sure its A like completely completely absolutely sure its A......
but if u put steell which has the same expansitivity as concrete, then wuts the point...its gna expand as much as steel....so it wont lock into the concrete....whereas aluminium will lock into concrete and besides concrete is much more stronger than aluminium so aluminium cant harm the buliding....
17:
--- Quote from: Bakhtawar on June 07, 2009, 07:05:13 am ---r u sure its A like completely completely absolutely sure its A......
but if u put steell which has the same expansitivity as concrete, then wuts the point...its gna expand as much as steel....so it wont lock into the concrete....whereas aluminium will lock into concrete and besides concrete is much more stronger than aluminium so aluminium cant harm the buliding....
--- End quote ---
yeah we are sure
it doesn't go that way, the point is that when concrete has to expand, steel will expand by exactly the same amount per meter, so this means that there is no negative effect on the structure, but if aluminum was used then, if concrete was to expand by 1cm for example, then aluminum will expand by 2 cm for example, meaning that it will pop out of the concrete block and haha maybe into the above floor!! get it!! :P
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