السلام عليكم...:stickjo4:

عندى سؤالين صعبين حد ممكن يساعدنى ف حلهم

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?]