D

trứng có trước

D

I returned up the tv because I wanted to hear music clear

g₁=\(\dfrac{G.M}{\left[r+h\right]^2}\)=\(\dfrac{G.M}{\left[2h+h\right]^2}\)=\(\dfrac{G.M}{\left[r+\dfrac{1}{2}r\right]^2}\)=\(\dfrac{G.M}{\left[\dfrac{3}{2}r\right]^2}\)

g_{2=\(\dfrac{G.M}{r^2}\)}

=>\(\dfrac{g_1}{g_2}\)=\(\dfrac{r^2}{\dfrac{9}{4}r^2}\) <=>\(\dfrac{9,8}{g_2}\)=\(\dfrac{9}{4}\)

<=>g₂=9,8/\(\dfrac{9}{4}\) \(\simeq\)4,36 m/s²

\(=\frac{96}{97}\cdot\frac{97}{98}\cdot...\cdot\frac{999}{1000}=\frac{96\cdot97\cdot...\cdot999}{97\cdot98\cdot...\cdot1000}=\frac{96\cdot1\cdot....\cdot1}{1\cdot1\cdot....\cdot1\cdot1000}=\frac{96}{1000}=\frac{12}{125}\)