Wednesday

July 23, 2014

July 23, 2014

Posted by **Sarah** on Sunday, November 7, 2010 at 7:46pm.

1 atm = 101300 Pa = 101300 N/m2

ρwater = 1000 kg/m3

(a) What is the pressure pushing down on the surface of the water in tube (a) from the outside?

P = Pa *

101300 OK

(b) Tube (b) is also filled with water, A1 is 0.04 m2 and A2 is 0.22 m2 Two pistons are placed in both ends of the tube and forces, F1 and F2 are exerted on the pistons so that they remain at the same height. If F1 = 20 N what is F2?

F2 = N *

110 OK

(c) Tube (c) is again filled with water. A1 and A2 are the same as in part (b). Two pistons apply different forces to the water in the tube so that the water in the right side of the tube is a height h = 0.51 m above the height of the water in the left side of the tube. If F2 = 143 N what is F1?

F1 = N *

225.92 OK

HELP: What is the expression for the pressure difference?

(d) Now two fluids are placed in the same tube (d). Both sides are open to the atmosphere without pistons. One fluid is water and the other (on top of the water in the left branch of the tube) is an oil of unknown density. l = 111 mm and d = 5.7 mm. What is the density of the oil?

densityoil = kg/m3

HELP: Find two expressions for the pressure at the water/oil interface and solve for the density of the oil.

I got a, b, and c but I just need help with d

- physics -
**bobpursley**, Sunday, November 7, 2010 at 7:49pmIF this is a U tube, the weights of the liquids has to be the same. Weight= density*height*area

so the height will be something like this (you workout the math)

height1/height2= density2/density1

- physics -
**mr. clinton**, Monday, November 8, 2010 at 5:05amLOL

- physics -
**Taras**, Sunday, November 28, 2010 at 7:05pmCan you please explane C ???

- physics -
**John**, Friday, November 4, 2011 at 12:47amHey Sarah, can you explain how you got C??

**Related Questions**

Chemistry - one morning you are given 3 test tubes of aqueous solutions of ...

spanish - in reference to the last question it has to be a four letter word ...

math - Following are three sets of letters. Draw one letter from Set 1 and place...

math - Following are three sets of letters. Draw one letter from Set 1 and place...

5th grade math - How do you do letter equations? "Each letter in the equation ...

English - I'm a 7 Letter Words, You Read me daily, My 5, 6, 7th Letter increases...

lab! - Use the following description of an experiment to answer the questions. A...

math - draw one set of letter from set 1 and place in set 2 draw one letter from...

Chemistry Lab - Hi, I'm doing a lab with acid-base indicators and I'm utterly ...

Science 10 - I was given a question of "The ollowing apperatua was set up and ...