السلام عليكم...

عندى سؤالين صعبين حد ممكن يساعدنى ف حلهم:028ja7:

a body has aweight of 160 N when weighted in air and a weight of 120 N when totally immersed in a liquid
Find relative density of the body?



Water pipe inters a house at ground floor ,if its radius 5cm velocity of water is 1m/sec ,at upper floor its radius becomes 1cm
What is the force acted by water?]

يلا حد يحاول يحل لانى بجد مش عارفه طريقه الحل
بس عارفه الحل النهائى

tb heya awel wa7da el-relative density bta3et-ha hatkun ... (( 4times The Relative Density of the Liquid )) ??!sa7

هو اول واحده مكتوب الحل 3.2
بس المستر قالى غلط وانها 4
فأعتقد ان الاجابه اللى ف الكتاب غلط
i think u r right it's 4times the relative density of the liquid
what adout the second one??

a el 3laka ben l force w msa2el el visocosity!!!
2t2kdy mn el so2al

no it is a right one
i knew the answer

Ya ret tktby el answer

196.3 n
thats the ans

a body has aweight of 160 N when weighted in air and a weight of 120 N when totally immersed in a liquid
Find relative density of the body?


hwa msh el mafroud enna hangeb el upthraust force w hatb2a 40 n w ba3dha l mafroud ykon ma3ana el denisty bta3t el liqued 3ashan ngeb el volume immersed w lma ngeb l volume immersed n2dr ngeb el denisty bta3t el solid w n2smha 3la 1000 w ngeb el R.D bta3t el body ????????? a3tkd en el so2al na2so el denisty bta3t el liqued fe 7alet lw 3awez l rR.D rakm mo7add !!!!!!!!!!!
lakn p2a lw 3awez lratio between l R.D W l denisty bta3t el liqued >>>>>>>>>>>>
fa ana tl3t m3aya l R.d = 0.04 DENISTY OF LIQUED :o :o :o W t2rebn ana mut2kda mn egabty fa yaret tktby el full answer

196.3 n
thats the ans
steps??????????????

حتبقى عن طريقchange in momentum

حتبقى عن طريقchange in momentum
F=PL/T
hngeb mnen el change in time w mnen el change in momentum?