A 720 kg roller-coaster starts off from Location A. Assuming friction does not impede the car's motion, what will be the change
2 answers:
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Complete Question
One arm of a U-shaped tube (open at both ends) contains water, and the other alcohol.
If the two fluids meet at exactly the bottom of the U, and the alcohol is at a height of 18 cm, at what height will the water be?Assume the density of alcohol is
Answer:
The height of water is
Explanation:
From the question we are told that
The height of the alcohol is
The density of the alcohol is
Generally the pressure on both arm of the tube are equal given that they are both open
i,e
Where is pressure of alcohol and
is pressure of water
So the pressure on the arm of the tube containing the alcohol is mathematically evaluated as
substituting values
Generally the pressure on the arm of the tube containing the water is mathematically evaluated as
where is the density of water which has a value
So
=>
=>
Answer:
5.79 in
Explanation:
We are given that
Diameter,d=0.30 in
Radius,r=
Weight of hydrometer,W=0.042 lb
Specific gravity(SG)=1.10
Height of stem from the water surface=3.15 in
Density of water=
In water
Volume of water displaced
Volume of another liquid displaced=
Change in volume=V-V'
Substitute the values
By using
1 ft=12 in
l=2.64 in
Total height=h+l=3.15+2.64= 5.79 in
Hence, the height of the stem protrude above the liquid surface=5.79 in