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25 Cards in this Set
- Front
- Back
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Why is maple syrup not applied with Bernoulli's equation
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Doesn't fit rule of no viscosity
The other rules are: Must have an incompressible gas Must not be turbulent The flow rate must be steady |
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If pressure is higher at one end of a pipe (Bernoulli) what is the relationship of the speed
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The speed will be lower at this point-
Also the Area will be higher |
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Describe the pascal effect
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F1/A1=F2/A2
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If floating what must be true
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mg=density of FLUID *volume submerged* gravity
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If a objects density is 3/4 the density of water, then what is the amount submerged underwater
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3/4 will be submerged
Vsub/V=density object/ density fluid |
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What is the equation for gauge pressure
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Pressure = density(fluid) * g * depth
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What is the efflux speed of a liquid leaving a hole in a tub,container...
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V= (2gD)^1/2
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If the efflux seed of a liquid leaving a hole in the bottom of a barrel of liquid decreases by 1/2 then the barrel is:
1/4 full 1/ (2)^1/2 full 1/2 full 3/4 full |
1/4 full becuase Vefflux is proportional to (D)^1/2. So decrease by factor of 2, you decrease by a factor of 4
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What is specific gravity
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Specific gravity = density of object/density of H2O
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What is usually meant by the apparent weight
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The normal force
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Explain bernoulli's effect in reference to a plane's wing
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The speed at the top of the wing is more than the bottom, so at the bottom pressure is greater and at the top pressure is less
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What is flow rate
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Flow rate is volume/time
Flow rate = A*v Flow rate liters/sec A-Cross sectional area V- Flow speed-m/sec |
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Why is A1V1 = A2V2
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Because flow rate is constant if ideal
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If a object weighs 100N less while completely submerged what is causing this feel. For example, If an object is weighs 100N less when submerged, what is the volume of the object
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The 100N is a result of the buyont force
B= 100N- density fluid*g*Vobject Volume-.1m^3 |
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Convert 100m ^3 to cm^3
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100 000 000 cm ^3
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What is the equation for pressure?
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Pressure = Force/Area
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What is the equation used to find the gauge pressure?
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Pgauge = gravity*density of fluid*depth
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What is the equation for buyont force?
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Fbuyont = density of fluid * volume submerged * gravity
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What happens when the object floats and in relation to density object / density fluid?
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Then the ratio of the density ob/density fluid, will equal the volume of object submerged if density of fluid is greater than the density of object
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What is the equation when the object floats?
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Fbouyont=weight
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What equations can you derive from pascal's law?
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F1/A1= F2/A2 because pressure the same everywhere
A1d1 = A2d2 |
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What is the area of a square, rectangle and circle?
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Circle= pi*rsquared
Square= s*s Rectangle=l*w |
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In the bernoulii equation, if pressure increases what happens to flow speed?
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Flow speed will decrease and vice versa
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What is equation for stress,
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Stress is Force/Area
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If an object is said to weigh 100 N less, what does this mean?
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The buyont force takes away from the weight, so Fb=100N
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