U=E₁-E₂=mgh₁-mgh₂=mg(h₁-h₂)=0.05*10*(1.5-1.2)=0.15ДЖ
U=Q=cmΔtΔt=Q/cmc=500Дж/кг⁰С
Δt=0.15/500*0.05=0.006⁰C
U=E₁-E₂=mgh₁-mgh₂=mg(h₁-h₂)=0.05*10*(1.5-1.2)=0.15ДЖ
U=Q=cmΔt
Δt=Q/cm
c=500Дж/кг⁰С
Δt=0.15/500*0.05=0.006⁰C