A20-cm-diameter vertical cylinder is sealed at the top by a frictionless 23 kg piston. the piston is 86 cm above the bottom when the gas temperature is 307°c. the air above the piston is at 1.00 atm pressure.
a) what is the gas pressure inside the cylinder?
b) what will the height of the piston be if the temperature is lowered to 13°c?

108507.02596 Pa

42.42 cm

Explanation:

F = Force

m = Mass of piston = 23 kg

= Initial temperature = 307°C

= Final temperature = 13°C

= Outside pressure

= Pressure inside cylinder

A = Area of pistion

h = Height of piston

Change in pressure is given by

Gas pressure inside the cylinder is 108507.02596 Pa

From ideal gas law we have the relation

The height of the piston at 13°C will by 42.42 cm

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.