Suppose a distant world with surface gravity of 6.96 m/s2 has an atmospheric pre

Question

Suppose a distant world with surface gravity of 6.96 m/s2 has an atmospheric pressure of 7.32 x10^4 Pa at the surface.
(a) What force is exerted by the atmosphere on a disk-shaped region 2.00 m in radius at the surface of a methane ocean? ---- I got this answer: 919858.3N

b. What is the weight of a 10.0-m deep cylindrical column of methane with radius 2.00 m? Note: The density of liquid methane is 415 kg/m3.

(c) Calculate the pressure at a depth of 10.0 m in the methane ocean.

Can someone please explain to me how to do this? and show steps. Thank you!!

Explanation / Answer

b)weight=area*density*6.96=2^2*10*415*6.96=362967.05 J

c)pressure=p_atm+gh

= 7.32 x10^4 Pa+415*6.96*10=102084 pa

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