Physics exam of Sudan 2009

[asharaf elgendy]

Hi this is my 1st subject
You can ask me for any thing any time

[solmahmed]

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[decoogalal]

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[منال طلعت]

لو سمحت أنا مش عارفة أوصل لأى توقع من الاسئلة اللى فى المنتدى
شكرا

[darsh3]

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[dumbledour]

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[mamarn73]

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[الشايب الشايب]

فيييييييييييييننننننننن مش موججججججججودددد

[abd el ghany]

ألف شكر مع التحية

[امينة حماد]

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[علي أشرف محروس]

In problems concerning Prism to know the refractive index ; some books apply the following
n=sin phi one/sin theta one= sin theta two/sin phi two

but sometimes in the answers they apply this law or use n=sin phi two/sin theta two instead of it

why?
and according to what in the problem ? given that the problem give no information to reach this method


2- Chapter 4

what is the mechanism of the U-shaped tube balance ? when we add oil to the water then the oil pushes the water and we take the separating surface .....is this correct meaning?


thanks for ur help

[adora]

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[mohamed4433]

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