Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude

If the cabin air pressure is lower, there is less air for unit volume.

I'm pretty sur this is correct. I hope this helped!

- Because there is an inverse relation between altitude and the number of gas molecules striking the outer surface of the bottle (pressure exerted on it).

- Therefore, when the bottle is taken to lower altitude, the number of gas molecules striking the outer surface of the bottle increases and so changing its shape..

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.