a) BTCN

vo= 8m/s

zo=6,8m

vật đạt dộ cao cực đại=> tại đó v1=0

Wo= W1$\iff \frac{1}{2}mv{o}^2+mgzo= 0+mgz1 \iff z1=10m$

V1=20l

T1= 27+270=300k

p1=?

V2= 100. 2= 200l

p1= 1atm

T1= 17+273= 290K

Giải

Áp dụng phương trình trạng thái khí lí tưởng

$\frac{p1v1}{T1}=\frac{p2v2}{T2}\iff \frac{p1,20}{300}=\frac{1.200}{290}\iff p1\approx 10,34$ 

The exhibition ends at 8 a.m 

 1/ Nam like coffee but he doesn't like milk

2/ the book is under the chair please put it on the table

3/ I don't need blue hats

The baby who is sitting in an armchair is my sister.