Olimpiadnye Zadachi S Reshenijami Po Fizike 8 Klass Apr 2026

P2=mwgS=ρia3g7a2=ρiag7cap P sub 2 equals the fraction with numerator m sub w g and denominator cap S end-fraction equals the fraction with numerator rho sub i a cubed g and denominator 7 a squared end-fraction equals the fraction with numerator rho sub i a g and denominator 7 end-fraction

Before melting, the pressure directly under the cube is caused by its weight migm sub i g olimpiadnye zadachi s reshenijami po fizike 8 klass

exerted on the area directly under the cube before melting to the pressure P2cap P sub 2 P2=mwgS=ρia3g7a2=ρiag7cap P sub 2 equals the fraction with

P1=miga2=ρia3ga2=ρiagcap P sub 1 equals the fraction with numerator m sub i g and denominator a squared end-fraction equals the fraction with numerator rho sub i a cubed g and denominator a squared end-fraction equals rho sub i a g ρirho sub i is the density of ice. After melting, the mass of water equals the mass of ice . The water spreads over the entire bottom area olimpiadnye zadachi s reshenijami po fizike 8 klass