\(20cm^2=0,002m^2\)
\(=>F=P=10m=10\cdot50=500N\)
\(=>\left\{{}\begin{matrix}p=\dfrac{F}{S}=\dfrac{500}{0,002}=250000\left(Pa\right)\\p'=\dfrac{F'}{S'}=\dfrac{500}{0,002\cdot2}=125000\left(Pa\right)\end{matrix}\right.\)
Đúng 2
Bình luận (0)