物理问题.请英文比较好的进来帮忙、Thepressureat10mbelowthesurfaceoftheoceanisabout2.00×10^5Pa.Whichofthefollowingstatementsistrue?(以下哪个是对的)A.Theweightofacolumnofseawater1m^2incrosssectio

Question

物理问题.请英文比较好的进来帮忙、
The pressure at 10 m below the surface of the ocean is about 2.00×10^5 Pa.
Which of the following statements is true? (以下哪个是对的)
A. The weight of a column of seawater 1 m^2 in cross section and 10 m high is about 2.00×10^5N
B. The weight of a column of seawater 1 m^2 in cross section and 10 m high plus the weight of a column of air with the same cross section extending up to the top of the atmosphere is about 2.00×10^5N.
C. The weight of 1m^3 of seawater at 10m below the surface of the ocean is about 2.00×10^5N.
D. The density of seawater is about 2.00×10^5 times the density of air at sea level.
Now consider he pressure at 20m below the surface of the ocean,then pressure is
A. twice that at a depth of 10m.
B. the same as that at a depth of 10m
C. equal to that at a depth of 10m plus the weight of a column of seawater 1 m^2 in cross section and 10 m high.
D. equal to the weight of a column of seawater 1 m^2 in cross section and 20 m high.
急...谢谢

Answer 1

关键是：2.00×10^5 Pa是总压强,包含大气压!
1. B
2. C