Дано t=0C k=0,5 л=3,3*10^5 Дж/кг V- ?
Eк=m*V^2/2
Q=k*Eк
л*m=0,5*m*V^2/2
4*л=V^2
V=2*√л=2*√33*10^4=1149 м/с
1. - 3)
2. - 1)
3. - 2)
4. - 2)
a₁/a₂ = m₂/m₁
S₁ = a₁*t²/2 => a₁ = 2*S₁/t²
S₂ = a₂*t²/2 => a₂ = 2*S₂/t²
m₂/m₁ = S₁/S₂ = 1/2
m₁ = 2*m₂
S1=0.0001 м2
S2=1.1 м2
F2/F1=?
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p1=p2
F1/S1=F2/S2
F2/F1=S2/S1=1.1/0.0001=11000
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