Which of the following statements is true? the weight of a column of seawater 1 m2 in cross section and 10 m high is about 2.00×105 n. the weight of a column of seawater 1 m2 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 2.00×105 n. the weight of 1 m3 of seawater at 10 m below the surface of the ocean is about 2.00×105 n. the density of seawater is about 2.00×105 times the density of air at sea level.

“The weight of a column of seawater in cross section and 10 m high + the weight of a column of air with the same cross-section elongating up to the top of the atmosphere is about ” is true from the above-given sentences.

Explanation:

It depends on if you are talking about gauge pressure or total pressure. The “weight of a column” of seawater in “cross section” and 10 m high is about . This is gauge pressure, which considers the surrounding air pressure, and only reads off pressure above “air pressure”. “The weight of a column of seawater in cross section and 10 m high + the weight of a column of air with the same cross-section elongating up to the top of the atmosphere is about ”. The “total pressure”, which considers the “pressure” of the whole which is above a certain height.

less than one you can't create energy

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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