What are some of the problems with measuring pressure in the way
shown in this experiment? How could you avoid these
problems?
Liquids kPa D- 1000 kg/m* h 29.0 cm P = 2.8 kPa
Homework Answers
The U-tube manometers measure the presupre relative to atmospheric pressure. The pressure will be positive when aplliap pressure is more than atmospheric pressure and the pressure will be negative when the applied pressure is less than atmospheric pressure.
Disadvantagesof U tube manometers.
- The measuring fluid should be of low density when pressure relatively close to the atmospheric pressure is measured, because if the fluid of higher density is taken, then it will not rise to a sufficient height for a reading to be taken.
- When you have to measure high pressure you will have to use a higher density liquid, otherwise the liquid will rise very high and come out of the tube, so you have to change the liquid everytime for the different requirements.
- Since one end of tube is exposed to air, the liquid can catch some impurities from atmosphere.
Add Answer to:
What are some of the problems with measuring pressure in the way shown in this experiment? How co...
Example 13.4: Pressure in a tube with two liquids/ P. 439 A U-shaped tube is closed...
Example 13.4: Pressure in a tube with two liquids/ P. 439 A U-shaped tube is closed at one end; the other end is open to the atmosphere. Water fills the side of the tube that includes the closed end, while oil, floating on the water, fills the side of the tube open to the atmosphere. The two liquids do not mix. The height of the oil above the point where the two liquids touch is 75 cm, while the height...
Problem #1 A simple barometer can be made in much the same way as a manometer,...
Problem #1 A simple barometer can be made in much the same way as a manometer, shown in Fig. 2-1. In the figure, the reservoir initially contains 1 L of air (an ideal gas) t'C and P 101.3 kPa. The diameter of the reservoir is 5 cm, while the diameter of the tube is 0.5 cm. The working fluid is water (p-999 kg/m3). Consider a manometer located in a room at T- 20°C (a) What will the deflection, h, of...
A diagram of a U tube for measuring osmotic pressure is shown below. The height different...
A diagram of a U tube for measuring osmotic pressure is shown below. The height different between the two columns of liquid is 10.00 Cm. The dashed line represent a semi-permeable membrane through which solvent molecules can pass, but solute molecules can not. i) On which side (right or left) is the solute located? ii) Calculate the osmotic pressure in atmospheres. Hint this is actually easy: The pressure difference is given by rho gH. Where rho is the density of...
When the hydrofoil shown was tested, the minimum pressure on the surface of the foil was...
When the hydrofoil shown was tested, the minimum pressure on the surface of the foil was found to be 80 kPa absolute when the foil was submerged 1.9 m and towed at a speed of 7 m/s. At the same depth, at what speed will cavitation first occur? Assume irrotational flow for both cases and T = 10 °C. Water = 10°C (50°F) (a) What is the absolute pressure of the atmosphere? kPa (b) What is the specific weight of...
QUESTION1 We do an experiment several different times. We get different answers each time. What should...
QUESTION1 We do an experiment several different times. We get different answers each time. What should we do? Consider whether what you're measuring is always the same or could change orhave some randomness built in You should always get exactly the same answer every time you do an experiment.げyou dont you're doing something wrong Think about how well you can use the measuring instrument, inciuding any problems you expect Figure out how accurate your measuring instruments) is. Figure out a...
In a steam power cycle shown in the figure, the pressure of the water vapor exiting...
In a steam power cycle shown in the figure, the
pressure of the water vapor exiting from the boiler with 1 kg mass
at 1 point is P1 = 4 MPa, while the temperature is T1 = 400 oC, the
pressures at the inlet and outlet of the mixing chamber (K.O.) are
P2 = P3 = P4 = 1 MPa. The temperature at the inlet of the low
pressure turbine (A.B.T.) is measured as T4 = 240 oC and the...
In problems about liquids in hydrostatic equilibrium
± Tactics Box 14.1 Hydrostatics Learning Goal:To practice Tactics Box 14.1 Hydrostatics.In problems about liquids in hydrostatic equilibrium, you often need to find the pressure at some point in the liquid. This Tactics Box outlines a set of rules for thinking about such hydrostatic problems.TACTICS EOX 14+ Hydrostatics1. Draw a picture. Show open surfaces, pistons, boundaries, and other features that affect the pressure. Include height and area measurements and fluid densities. identify the points at which you need to find the...
N10. a. What is the density of air, given P- 80 kPa and T=0°C? b. What...
N10. a. What is the density of air, given P- 80 kPa and T=0°C? b. What is the temperature of air, given P-90 kPa and p 1.0 kg m-3 ? and ρ= 1.2 kg·m-3 ? C. What is the pressure of air, given T-90℉ d. Give 2 combinations of pressure and density that have a temperature of 30°C. e. Give 2 combinations of pressure and density that have a temperature of 0°C. f. Give 2 combinations of pressure and density...
Question 2 Figure 2: Flow between two inclined plates Consider a two-dimensional plates, as shown in...
Question 2 Figure 2: Flow between two inclined plates Consider a two-dimensional plates, as shown in figure 2. Assume that pressure increases 30°. Acceleration due t o Pa and the channel height is h 10 cm inclined at te the velocity profile of the flow. State your assumptions and show your work. onal Newtonian, steady state, incompressible flow of a fluid be- by 1 kPa/ a dynamic viscosity of H1-1 x 10 amic viscosity of uo wall towards the right....
Marko and Daniel have worked up a sweat playing fortnite. They both decide to take a quick break and grab a glass of water with some ice in t. Marko's mum does not like how much fortnite the boys...
Marko and Daniel have worked up a sweat playing fortnite. They both decide to take a quick break and grab a glass of water with some ice in t. Marko's mum does not like how much fortnite the boys play so she decides to play a joke on her son. She fills one cup with fresh water of density p 1000 kg/m3 and another identical cup with salt water of density p 1029 kg/m3, the latter of which is intended...
Example 13.4: Pressure in a tube with two liquids/ P. 439 A U-shaped tube is closed at one end; the other end is open to the atmosphere. Water fills the side of the tube that includes the closed end, while oil, floating on the water, fills the side of the tube open to the atmosphere. The two liquids do not mix. The height of the oil above the point where the two liquids touch is 75 cm, while the height...
Problem #1 A simple barometer can be made in much the same way as a manometer, shown in Fig. 2-1. In the figure, the reservoir initially contains 1 L of air (an ideal gas) t'C and P 101.3 kPa. The diameter of the reservoir is 5 cm, while the diameter of the tube is 0.5 cm. The working fluid is water (p-999 kg/m3). Consider a manometer located in a room at T- 20°C (a) What will the deflection, h, of...
A diagram of a U tube for measuring osmotic pressure is shown below. The height different between the two columns of liquid is 10.00 Cm. The dashed line represent a semi-permeable membrane through which solvent molecules can pass, but solute molecules can not. i) On which side (right or left) is the solute located? ii) Calculate the osmotic pressure in atmospheres. Hint this is actually easy: The pressure difference is given by rho gH. Where rho is the density of...
When the hydrofoil shown was tested, the minimum pressure on the surface of the foil was found to be 80 kPa absolute when the foil was submerged 1.9 m and towed at a speed of 7 m/s. At the same depth, at what speed will cavitation first occur? Assume irrotational flow for both cases and T = 10 °C. Water = 10°C (50°F) (a) What is the absolute pressure of the atmosphere? kPa (b) What is the specific weight of...
QUESTION1 We do an experiment several different times. We get different answers each time. What should we do? Consider whether what you're measuring is always the same or could change orhave some randomness built in You should always get exactly the same answer every time you do an experiment.げyou dont you're doing something wrong Think about how well you can use the measuring instrument, inciuding any problems you expect Figure out how accurate your measuring instruments) is. Figure out a...
In a steam power cycle shown in the figure, the
pressure of the water vapor exiting from the boiler with 1 kg mass
at 1 point is P1 = 4 MPa, while the temperature is T1 = 400 oC, the
pressures at the inlet and outlet of the mixing chamber (K.O.) are
P2 = P3 = P4 = 1 MPa. The temperature at the inlet of the low
pressure turbine (A.B.T.) is measured as T4 = 240 oC and the...
N10. a. What is the density of air, given P- 80 kPa and T=0°C? b. What is the temperature of air, given P-90 kPa and p 1.0 kg m-3 ? and ρ= 1.2 kg·m-3 ? C. What is the pressure of air, given T-90℉ d. Give 2 combinations of pressure and density that have a temperature of 30°C. e. Give 2 combinations of pressure and density that have a temperature of 0°C. f. Give 2 combinations of pressure and density...
Question 2 Figure 2: Flow between two inclined plates Consider a two-dimensional plates, as shown in figure 2. Assume that pressure increases 30°. Acceleration due t o Pa and the channel height is h 10 cm inclined at te the velocity profile of the flow. State your assumptions and show your work. onal Newtonian, steady state, incompressible flow of a fluid be- by 1 kPa/ a dynamic viscosity of H1-1 x 10 amic viscosity of uo wall towards the right....
Marko and Daniel have worked up a sweat playing fortnite. They both decide to take a quick break and grab a glass of water with some ice in t. Marko's mum does not like how much fortnite the boys play so she decides to play a joke on her son. She fills one cup with fresh water of density p 1000 kg/m3 and another identical cup with salt water of density p 1029 kg/m3, the latter of which is intended...
Most questions answered within 3 hours.
-
A combustion reaction is describes as a carbon source reacting
with oxygen and producing carbon dioxide...
asked 5 minutes ago -
Buckminsterfullerence is a recently allotrope of carbon in which
carbon atoms form molecules of formula C_60,...
asked 7 minutes ago -
Lower Equitorial and Upper Equitorial are the same except Lower
Equitorial has a larger capital stock....
asked 12 minutes ago -
how do you think that pH of a jar where you have added a certain
amount...
asked 22 minutes ago -
If the Federal Reserve increases the reserve requirement, what
will happen to the Money Supply in...
asked 17 minutes ago -
Suppose that market demand for a good is given by Q = 9 - 0.3 P...
asked 23 minutes ago -
two thin lenses are separated by a distance x. The first lens
has a focal length...
asked 25 minutes ago -
The computer that controls a bank's automatic teller machine
crashes a mean of 0.6 times per...
asked 28 minutes ago -
`1) How is -9 (base 10) represented in 8-bit two's complement
notation?
a) 00001001
b)11110111
c)11110110...
asked 38 minutes ago -
A 10.000 g sample of water contains 11.19% H by mass. what
should be the %H...
asked 56 minutes ago -
Consider an investment game among 2 players. Each player can
either invest,
i, or not invest,-i....
asked 53 minutes ago -
The time taken to complete a particular task is normally
distributed with a standard deviation of...
asked 1 hour ago