2. In a large tank of liquid, the pressure at a given depth depends on _____ A)

Question

2. In a large tank of liquid, the pressure at a given depth depends on _____

A) the density of the liquid, only.

B) both the depth and the density of the liquid. (this is what i got)

C) the surface area, only.

D) the depth, only.

3. A container is filled with water and the pressure at the bottom of the container is P. Then the container is emptied halfway and topped off with oil of density 800 kg/m3, which floats on top of the water. What is the pressure at the bottom of the container now?

A) A pressure > P (this is what i got)

B) The same pressure P

C) A pressure < P

D) This is not possible to answer with the information given

4. A camper heats 25 L of water to boiling to get hot water for a bathing. What volume of water from a 12oC stream must he then add to get the bath water to 42oC ?

A) 25 L

B) 48 L (this is what i got)

C) Not enough information to tell.

D) 30 L

E) 55 L

Explanation / Answer

2. the depth, only as difference pressure is identified at different depths.

3. it changes due to the fact that density changes since pressure in a liquid = density * acceleration due to gravity * height/depth

4. I would say B is k

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