Question

A U-tube with a cross-sectional area of 1.00 cm2 is open to the atmosphere at both ends. Water is poured into the tube until the water rises part-way along the straight sides, and then
5.00 cm3 of oil is poured into one end. As a result, the top surface of the oil ends up 0.550 cm higher than the water surface on the other side of the U. What is the density of the oil?

Answer: _______ kg/m3

Answer 1

the density of oil is less than the density of water

Answer 2

5.39d

Answer 3

pressure of both sides r equal

Answer 4

i know thr density of water is 1gm/cm^3

Answer 5

well it is 1000kg/m^3

Answer 6

1000kg/m^3=1000*1000gm/10^6cm^3

Answer 7

=1gm/cm^3

Answer 8

okay, but we are looking for kg/m3

Answer 9

is this right?

5-0.550=4.45
5cm^3 of oil=4.45cm^3 of water
density of oil=4.45/5=0.89 of water
0.89*1000=890km/m^3

Answer 10

@shamim

Answer 11

ya i think ur result is ok

Answer 12

so its 890kg/m^3

Answer 13

in my equation h= height of water

Answer 14

okay, so you believe that mine is correct? did you get the same as me?

Answer 15

h*1*9.8=(h-4.45)*1*9.8+5*d*9.8
h=height of water level
g=9.8 m/sec^2
1gm/cm^3 is the density of watet

Answer 16

ya my result will b same as u

Answer 17

but my result is in cgs system
we hv to convert it into mks system

Answer 18

just multiply by 1000

Answer 19

did u get my solution

Answer 20

hmm i dont understand how you solved it

Answer 21

i think mine is better for understanding

Answer 22

well can you show me the equation then show me the numbers plugged in, im really confused

Answer 23

ok

Answer 24

c my equation

Answer 25

u know the pressure of both sides r equal

Answer 26

one side is full of water

Answer 27

let the height of that water is h

Answer 28

other side is full of water n oil

Answer 29

water height is less than the water height of other side by 4.45cm

Answer 30

height of oil is 5 cm

Answer 31

im way confused :/

Answer 32

u know the equation of pressure is
p=hdg
h=height of liquid
d=density of lequid
g=9.8 m/sec^2

Answer 33

i hv to draw it for better understanding

Answer 34

i m now frm my cell phone
so its not possible to dtaw

Answer 35

draw

Answer 36

but i am confused on what the value of h is and the density of the liquid....

Answer 37

i c

Answer 38

h will b cancell out

Answer 39

n we will find out the value of liquid d

Answer 40

okay, you have to write me the equation that gives me 890, because im not understanding how you got yours

Answer 41

u will take all h terms in one side

Answer 42

h*1*9.8=(h-4.45)*1*9.8+5*d*9.8
h=(h-4.45)+5*d
i cancelled 9.8 frm each term

Answer 43

5*d=h-h+4.45

Answer 44

5*d=4.45

Answer 45

did u get now

Answer 46

no, i dont

Answer 47

where is ur problem

Answer 48

d=4.45/5 gm/ cm^3
d=(4.45/5)*1000 kg/m^3

Answer 49

okay

Answer 50

did u really get my solution