# A turbine operating under steady flow conditions receives steam at the following state: pressure 13.8 bar, specific volume 0.143 m^3/kg, specific internal energy 2591kJ/kg and velocity 30m/s. The state of steam leaving the turbine is as follows: pressure 0.35 bar,

29,120 questions
1. ## Thermodynamics

A turbine operating under steady flow conditions receives steam at the following state: pressure 13.8 bar, specific volume 0.143 m^3/kg, specific internal energy 2591kJ/kg and velocity 30m/s. The state of steam leaving the turbine is as follows: pressure

asked by Claire on June 3, 2010
2. ## Physics

steam enters a turbine with a velocity of 16m/s and enthalpy 2950kj/kg . the steam leaves turbine with a velocity 32m/s and specific enthalpy 2539kj/kg. the heat lost to the surroundings as the steam passes through the turbine Is 25kj/kg . the steam flow

asked by Sannu Xeno on September 22, 2019
3. ## Physics

A bar of aluminum (bar A) is in thermal contact with a bar of iron (bar B) of the same length and area. One end of the compound bar is maintained at Th = 75.5°C while the opposite end is at 30.0°C. Find the temperature at the junction when the energy

asked by Chelsea on November 27, 2010
4. ## Physics

A bar of gold and a bar of silver are used to conduct heat from one end maintained at 80.0oC and another end maintained at 30.0oC. If both bars have the same length L = 1.00m and the same cross sectional area A=100cm2 and are insulated from the outside,

asked by Francis on April 24, 2017
5. ## physics

why when steady state conditions apply the rate of heat flow is the same?

asked by ridhi on June 1, 2012
6. ## Thermodynamics

Consider 100 kg/s of steam expanding in a turbine. The inlet to the turbine is at 15 MPa, 500 degrees C. The steam expands to 0.01 MPa. The exit entropy is 6.200 kJ/(kg.K). Though the turbine is well insulated, at a place where the temperature is 127

asked by ABCD on November 22, 2016
7. ## Physics

A nuclear plant on a submarine produces steam at 350C to drive a steam electric turbine. the temperature on the low side of the turbine is 27C. how much energy is dissipated as waste heat

asked by Anonym on April 10, 2017
8. ## ELA

Hello! I just wanted to double check my answer to see if I am thinking correctly. Read this passage: The principle of the mercury boiler is the utilization of mercury between the fire and the under-boiler surface exposed to the flame — the mercury, when

asked by Melody on May 15, 2018
9. ## Physics

A bar of gold is in thermal contact with a bar of silver of the same length and area. One end of the compound bar is maintained at 80.0°C while the opposite end is at 30.0°C. When the energy transfer reaches steady state, what is the temperature at the

asked by Brody on January 30, 2014
10. ## Science

The pressure guage on the steam condenser for a turbine indicates 26.2 in. Hg of vacuum. The barometer reading is 30.4 in. What the absolute pressure in the condenser in psia?

asked by Man Singh Chouhan on March 26, 2015
11. ## process chemical

The pressure guage on the steam condenser for a turbine indicates 26.2 in. Hg of vacuum. The barometer reading is 30.4 in. What the absolute pressure in the condenser in psia?

asked by paru on September 13, 2017
12. ## PHYSICS

A steam turbine operates between hot and cold reservoir temperatures of 538.0 ¢XC and 92.1 ¢XC, respectively. If heat is supplied at a rate of 238.0 MW, what maximum amount of power could the turbine deliver?

asked by melvin on March 27, 2010
13. ## Thermodynamics

Steam in a cylinder-piston arrangement expands from an initial condition of 5 bar, 80% dry to a final state of 2 bar, dry saturated steam. The initial volume of steam is 0.8 m3. The process of expansion can be represented by a straight line on the

asked by Phy on October 17, 2014
14. ## Chemistry

What is the function of a salt bridge in a galvanic cell? 1. To permit electrons to flow through the solution. 2. To maintain a steady flow of reactants from the cathode to the anode. 3. To form complex ions with the products of oxidation at the anode. 4.

asked by Anonymous on November 18, 2015
15. ## Chemistry (Insulated Vessel, temperature and vol.)

Insulated vessel has two compartments separated by a membrane. One side is 1 kg of steam at 400 C and 200 bar. The other side is evacuated. The membrane ruptures filling the entire volume. The final pressure is 100 bar. Determine the final temperature of

asked by Simon on October 2, 2012
16. ## Thermodynamics

100 kg of steam is enclosed in a piston-cylinder device, initially at 300°C and 5 bar. It expands and cools to 200°C and 1 bar. A) What is the change in internal energy of the steam in this process?

asked by Stan on February 2, 2016
17. ## Fluid Mechanics

A supersonic wind tunnel is to be operated at M=2.2 in the test section. Upstream from the test section, the nozzle throat area is 0.07 m². Air is supplied at stagnation conditions of 500 K and 1.0 MPa (abs). At one flow condition, while the tunnel is

asked by Katie on March 22, 2009
18. ## physics conduction

a one brick thick wall of 10cm thickness has temperatures 40deg C and 5deg C at the surfaces. if the thermal conductivity of the brick is 0.6W per m per K, what is the rate of heat flow per unit area W per m square through the bricks if steady state

asked by ridhi on June 1, 2012
19. ## Physics

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.85x10^5 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.28X10^5 Pa and the pipe

asked by Chelsea on November 20, 2012
20. ## PHYSICS

In a power plant the high pressure turbine trips due to an unauthorised valve shutdown. What are a) what is the angular acceleration of the turbine blade? b) what is the distance travelled by a point on the rim of the turbine blade during the acceleration?

asked by S on April 8, 2015
21. ## PHYSICS

In a power plant the high pressure turbine trips due to an unauthorised valve shutdown. What are a) what is the angular acceleration of the turbine blade? b) what is the distance travelled by a point on the rim of the turbine blade during the acceleration?

asked by Hannah on April 8, 2015
22. ## PHYSICS

In a power plant the high pressure turbine trips due to an unauthorised valve shutdown. What are a) what is the angular acceleration of the turbine blade? b) what is the distance travelled by a point on the rim of the turbine blade during the acceleration?

asked by Joe on April 9, 2015
23. ## PHYSICS!!!

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.22 105 Pa and the pipe

asked by k on November 11, 2012
24. ## math, physics

A 10 m high, 5 diameter cylindrical water tank has an inlet at the top and a drain at the bottom. The flow rate out of the tank depends on the pressure at the bottom of the tank via the following: dm/dt = (10^-4)*(P_bot) where P_bot is the absolute

asked by Anonymous on October 6, 2011
25. ## physics

A steam turbine operates between hot and cold reservoir temperatures of 538 degrees celcius and 92.1 degrees celcius respectively. If heat is supplied at a rate of 238 MW, what maximum amount of power could the turbine deliver?

asked by Mark on March 27, 2010
26. ## Physics

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.85 105 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.28 105 Pa and the pipe

asked by Chelsea on November 20, 2012
27. ## Physics

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.50 cm. At the higher point located at y = 2.50 m, the pressure is 1.30 105 Pa and the pipe

asked by Ashley on November 9, 2012
28. ## Physics - URGENT

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 ✕ 105 Pa and the pipe radius is 2.50 cm. At the higher point located at y = 2.50 m, the pressure is 1.21 ✕ 105 Pa and the

asked by Physics - URGENT on September 11, 2016
29. ## Physics

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.85 105 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.28 105 Pa and the pipe

asked by Chelsea on November 21, 2012
30. ## Physics

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.50 cm. At the higher point located at y = 2.50 m, the pressure is 1.30 105 Pa and the pipe

asked by Ashley on November 9, 2012
31. ## chemistry

Consider a liquid at 90 bar and 40 °C. What is the change in entropy of the substance as you change the conditions to 1 bar and 150 °C by expanding the liquid while heating? Vapor pressure = 59.2 bar heat of vaporization = 1.82 kJ/mol , both at 150

asked by pirate on December 3, 2011
32. ## physics

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is P1 = 1.85 104 Pa, and the pipe diameter is 5.0 cm. At another point y = 0.30 m higher, the pressure is P2 = 1.05 104 Pa and the pipe

asked by Anonymous on November 8, 2011
33. ## thermodyn. please check work

What is the sign of heat(Q), Work(W), or Temperature for these following situations. Say if it's +,-, or 0. 1)You hit a nail with a hammer: +W, Q=0, T=0 2)You hold a nail over a Bunsen burner: Q=+Q, Temp:constant, W=0 3)You compress the air in a bicycle

asked by Anonymous on August 15, 2009
34. ## Physics/Chemistry

I am not producing the correct answer which is 2.06 psia. Question: The pressure gauge on the steam condenser for a turbine indicates 26.2 in. Hg of vacuum. The barometer reading is 30.4 in. Hg. What is the absolute pressure in the condenser in psia? I

asked by Angie on September 18, 2012
35. ## Thermodynamics

Wet steam flowing at 4kg/s with a volumetric flow rate of 0.04m^3/s is initially at 80 bar. a) This stream is isovolumetrically cooled and decompressed to 40 bar. What is the total enthalpy change for this process in kW? b) This stream is throttled through

asked by Kevin on March 1, 2019
36. ## phy

(Q1)calculate the electric power which must be supplied to the filament of a light bulb operating at 3000k. the total surface area of the filament is 0.000008m2 and iits emissivity is 0.92.(a)20.3w (b)33.8w(c)46.4w(d)56.7w (Q2) calculate the change in

asked by kate on July 3, 2013
37. ## Thermodynamics

A combined seperating and throttling calorimeter was used to determined the dryness fraction of steam flowing through a steam main at a pressure of 900kPa. The pressure and temperature after throttling were 100kPa and 110C respectively. The mass of water

asked by Kay on December 7, 2010
38. ## Thermodynamics and Heat Transfer

A steam pipe is 75 mm external diameter and is 80 m long. It conveys steam at a rate of 1000 kg/h at a pressure of 2 Mpa. The steam enters the pipe with a dryness fraction of 0.98 and is to leave the pipe with a dryness of not less than 0.96. The pipe must

asked by Raul on April 21, 2010
39. ## Chemistry.

Ca(HCO3)2(s) decomposes at elevated temperatures according to the stoichiometric equation Ca(HCO3)2(s)-> CaCO3(s) + H2O(g) + CO2(g) a.) If pure Ca(HCO3)2(s) is put into a sealed vessel, the air is pumped out, and the vessel and its contents are heated, the

asked by Jill on November 22, 2010
40. ## Chemisrty

An intravenous line provides a continuous flow of drug directly into the blood. Assuming no initial drug in the blood, the amount of drug in the blood t hours after the dosing begins in m(t) - (a/k)(1-e^-kt), for t (=>)0, where k is the rate constant

asked by Rach on April 17, 2012

An intravenous line provides a continuous flow of drug directly into the blood. Assuming no initial drug in the blood, the amount of drug in the blood t hours after the dosing begins in m(t) - (a/k)(1-e^-kt), for t (=>)0, where k is the rate constant

asked by Jake on April 17, 2012
42. ## Fluid Mechanics

A converging-diverging nozzle with a throat area of 2 in² is connected to a large tank in which air is kept at a pressure of 80 psia and a temperature and a temperature of 60°F. If the nozzle is to operate at design conditions (flow is isentropic) and

asked by Katie on March 22, 2009
43. ## thermodynamic

A rigid vessel of 1m^3 contains steam at 20 bar and 400 degree C. the vessel is cooled until the steam is just dry saturated. Calculate the mass of steam in the vessel.

asked by Amber on July 17, 2011
44. ## Chem

A 1.00-mole sample of ammonia at 13.0 bar and 20°C in a cylinder fitted with a movable piston expands against a constant external pressure of 1.00 bar. At equilibrium, the pressure and volume of the gas are 1.00 bar and 22.0 L, respectively. a) calculate

asked by Alina on January 25, 2011
45. ## heat

the main purpose of the turbine in the turbojet engine is to? The turbine rotates the compressor, compressing the inlet air. Often, electrical generators and hydraulic pumps are attached to the turbine via gears also. drive the compresser

asked by angela on August 19, 2005
46. ## Chemistry

Dinitrogen tetroxide decomposes according to N2O4 (g) = 2NO2 (g) In a certain experiment, N2O4(g) at an initial pressure of 0.554 bar is introduced into an empty reaction container; after equilibrium is established, the total pressure is 0.770 bar. A

asked by Angel on March 19, 2012
47. ## Chemistry (Internal Energy)

5 kg of steam contained within a piston-cylinder assembly undergoes an expansion from state 1, where the specific internal energy U(1) is = 2710 [kJ/kg] to state 2, where U(2) = 2660 [kJ/kg]. During the process, there is heat transfer to the steam with a

asked by Simon on October 2, 2012
48. ## Science

Which of the following is not part of the process of producing electricity from coal? 1. Coal is lifted onto a platform to give it potential energy before burning. 2. Coal must be burned to release heat. 3. Heating water produces steam. 4. Steam runs a

asked by Alex on February 6, 2018
49. ## Dr bob please! Chemistry

hi, i think this prob has to do what you did the last time but how does pressure play appart in this chapter?? What pressure would have to be applied to steam at 325°C to condense the steam to liquid water (ÄH vap = 40.7 kJ/mol)?

asked by Rachelle on November 28, 2008
50. ## Physical Chemistry

At 25.0 degree celcius, the equilibrium 2 NOBr (gas) --> 2 NO (gas) + BR2 (gas) is rapidly established. When 1.10 g of NOBr is placed in a 1.0 L vessel at 25.0 degree celcius, the equilibrium pressure is 0.355 bar. Calculate the equilibrium constant K.

asked by Angela on October 20, 2006
51. ## Fluid Mechanics

Consider the 2D, incompressible, steady flow between parallel walls, the bottom wall is stationary and the top one is moving at a constant velocity Uw. The pressure is constant. Assuming the flow is fully developed (i.e. independent of x), we can write

asked by Alex on October 11, 2013
52. ## Environmental Science

True or False: 28. Hydroelectric energy is produced by flowing water turning a turbine which generates electricity. TRUE 32. Geothermal energy is generated when heated water or steam is pumped up from inside the Earth to power a turbine that generates

asked by y912f on March 1, 2010
53. ## Thermodynamics

a rigid vessel of volume 1m(^3) contains steam at 20bar and 400 degrees Celcius. The vessel is cooled until the steam is just dry saturated. Calculate the mass of steam in the vessel, the final pressure of the steam and the heat rejected during the

asked by Claire on March 12, 2010
54. ## Circuit and electronics

Here we analyze the time response of the circuit in Figure 3 which contains capacitive and resistive elements and a voltage source, VS. The voltage source is switched between two nodes in the circuit, and we observe the voltage response across C1. All

asked by Anonymous on February 9, 2014
55. ## Separation process

Oil used to absorb benzene from gas is to be stripped with steam at P = 1atm to recover the benzene.Equlibrium at the operating temperature is approximated using Henry's Law.When the oil contains 10%mol of benzene,the oil's partial pressure is 5.07kPa.The

asked by Meenaakshi on March 15, 2013
56. ## Physics

At what acceleration would you expect the blood pressure in the brain to drop to zero for an erect person? Why? (Assume there are no body mechanisms operating to compensate for such conditions)

asked by Gihan on March 19, 2017
57. ## biophysics

At what acceleration would you expect the blood pressure in the brain to drop to zero for an erect person ?why? (Assume there are no body mechanisms operating to compensate for such conditions)

asked by Gihan on March 19, 2017
58. ## thermodynamics

A fluid moves in a steady flow manner between two sections ina flow line. At section 1: A1=10ft2, v1=100ft/min, specificvolume1= 4ft3/lb. At section 2: A2=2ft2, density 2= 0.20 lb/ft3.Calculate the mass flow rate and speed at section 2.

asked by olbap on April 25, 2013
59. ## World history

Under the shilla dynasty , Korea became a tributary state of China. What is a tributary state ? A. A tributary state consists of one or more villages and is located within a sovereign state. B.A tributary state owes it allegiance to another state and

asked by ciara on May 19, 2012
60. ## Heat Transfer

A hot-wire anemometer is a temperature-based instrument for measuring velocities in a flowing gas. The key component of the device is a very fine wire (diameter = 0.0004 in., length = 0.20 in.) that is electrically heated. The wire is positioned so that

asked by Rangen on August 3, 2012
61. ## Chemistry

A vessel initially contains pure A at a pressure of 1.0 bar. The total pressure of all gases at equilibrium is 1.5 bar. What is K for this reaction? A (g) B (g) + C (g)

asked by Ash on October 18, 2015
62. ## Chemistry

A vessel initially contains pure A at a pressure of 1.0 bar. The total pressure of all gases at equilibrium is 1.5 bar. What is K for this reaction? A (g) B (g) + C (g)

asked by Ash on October 18, 2015
63. ## Chemistry

A vessel initially contains pure A at a pressure of 1.0 bar. The total pressure of all gases at equilibrium is 1.5 bar. What is K for this reaction? A (g) B (g) + C (g)

asked by Ash on October 19, 2015
64. ## English

Thank you very much for your corrections. I still have a few alternatives for you to check. 1) The demand for new clothes created the necessity (better: caused the development of new machinery?) to invent machinery for cloth-making. 2) New factories were

asked by Franco on November 26, 2010
65. ## Physics

In a container of negligible mass, 0.100 kg of steam at 110°C and atmospheric pressure is added to 1.00 kg of water at 20.0°C. (a) If no heat is lost to the surroundings, what is the final temperature of the system? (b) At the final temperature, how many

asked by Margret on November 25, 2015
66. ## Thermodynamic

A system contains 0.15 m3 of a gas at a pressure of 3.8 bar and 150 C. It is expanded adiabatically till the pressure falls to 1 bar. The gas is then heated at a constant pressure till its change in enthalpy is 70 kJ. Determine the total work done. Pl

asked by Abdu on November 22, 2016
67. ## science

A system contains 0.15 m3 of a gas at a pressure of 3.8 bar and 150 C. It is expanded adiabatically till the pressure falls to 1 bar. The gas is then heated at a constant pressure till its change in enthalpy is 70 kJ. Determine the total work done.

asked by seeoo on November 25, 2016
68. ## science

A system contains 0.15 m3 of a gas at a pressure of 3.8 bar and 150 C. It is expanded adiabatically till the pressure falls to 1 bar. The gas is then heated at a constant pressure till its change in enthalpy is 70 kJ. Determine the total work done.

asked by seeoo on November 26, 2016
69. ## Thermo

Argon in a rigid tank is heated from an initial state of 50 °C, 2 bar and 2m ³ to a final pressure of 8 bar. Determine the final temperature in °C to 2 decimal places. Argon cp=0.5203 kJ/kgK cv=0.3122 kJ/kgK

asked by Zz on December 3, 2017
70. ## phy

A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration 0.130 rad/s2. After making 2844 revolutions, its angular speed is 136 rad/s. (a) What is

asked by ang on April 14, 2016
71. ## physics

A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration 0.170 rad/s2. After making 2870 revolutions, its angular speed is 131 rad/s. (a) What is

asked by kyle on July 16, 2013
72. ## Physics

A wind turbine is initially spinning at a constant angular speed. As the wind's strength gradually increases, the turbine experiences a constant angular acceleration of 0.180 rad/s2. After making 2874 revolutions, its angular speed is 139 rad/s. A. What is

asked by Natasha on March 30, 2012
73. ## Chemistry

1) A dog has the same mass for 3 years. State whether this represents an equilibrium or steady state situations, and give your reasons. I'm not sure if I got this question right... I think this is a steady state because the dog is opened to the environment

asked by Tyler on November 25, 2013
74. ## Thermodynamics

A closed cycle gas turbine unit operating with max. And min. Temp. Of 760 and 20 Celsius deg has a pressure ratio of 7/1. Calculate the thermal efficiency and work ratio? Ans = 42.7 % , 0.505 My answers are : Efficiency 42.7 % which is correct.. but work

asked by Akki on November 26, 2015
75. ## Physics

In a steady flow system crude oil of density 1200 kgm-3 flows at the rate of 275kg/min through a horizontal pipeline of varying cross-sectionional areas 0.068 and 0.083m2 respectively. Determine the absolute pressure between X and Y.

asked by Rooney on May 13, 2018
76. ## Chemistry

I'm not sure how to find a linear equation for this problem. One common flow measurement device is the orifice meter, which consists of a disk with a machined hole. It is placed as an obstruction to flow in a pipe, causing pressure drop to occur as the

asked by Angel on December 14, 2011
77. ## chemistry

even every air can be changed in to liquid at certain pressure and temperature, why our earth tend to change water at gaseous state to liquid state and by what conditions?

asked by karthika on February 18, 2010
78. ## engineering

The flow system as shown in the Figure, the centrifugal pump(3500 R.P.M.) is delivering water at 100 gal/min and 70 °F into a boiler operating at a pressure of 35 psig. The water levels in the feed tank and boiler are constant. Because corrosion is

asked by sun.life on December 18, 2013
79. ## Science

Hurricane Katrina, which hit the Gulf Coast of Louisiana and Mississippi on August 29, 2005, had the second lowest ever recorded barometric pressure at 920mb. Convert this pressure to units of atmospheres, and inches of Hg. 1 bar = 0.98692 atm 0.92 bar =

asked by Alexis on September 2, 2015

Last year Rattner Robotics had $5 million in operating income (EBIT). The company had net depreciation expense of$1 million and interest expense of $1 million; its corporate tax rate was 40 percent. The company has$14 million in current assets and $4 asked by baby on July 29, 2007 81. ## financial management Last year Rattner Robotics had$5 million in operating income (EBIT). The company had net depreciation expense of $1 million and interest expense of$1 million; its corporate tax rate was 40 percent. The company has $14 million in current assets and$4

asked by marie on November 9, 2007
82. ## mitx

Consider a flat plate in a supersonic flow at an angle of attack as shown in the figure above, and assume the flow is inviscid. We will learn later in the course that the resulting flow is such that the pressure is uniform on both the upper surface and

asked by Anonymous on September 29, 2013
83. ## financial mang.

This is my problem i have to figure out can anyone talk me through this? I don't just want a answer i want to know how you come up withthe answer so i can learn from it. Last year Rattner Robotics had \$5 million in operating income (EBIT). The company had

asked by lois on October 26, 2007
84. ## materials bahavior

A specimen has an initial diameter of 200mm and a length of 700mm. At a stress of 40MPa and a temperature of 538oC the steady state strain rate is about 2×10−4% per hour. Find the primary creep elongation and the steady state creep elongation after 5000

asked by lucas on December 7, 2015
85. ## chemistry

What pressure would have to be applied to steam at 325°C to condense the steam to liquid water (ÄH vap = 40.7 kJ/mol)? Responses Dr bob please! Chemistry - GK, Friday, November 28, 2008 at 11:47pm Use the Clausius-Clapeyron Equation to calculate the

asked by Rachelle on November 30, 2008
86. ## Medical physics

1.A hypodermic needle of lenght 0.020m and inner radius 3.0 x10^-4 is used to force water at 20 degree celcious into the air at a flow rate of 1.0 x10^-7m^2 s-1 (a) what is the average velocity in the needle?(assume laminar flow), (b) what is the pressure

asked by JAMES on March 28, 2015
87. ## Medical physics

1.A hypodermic needle of lenght 0.020m and inner radius 3.0 x10^-4 is used to force water at 20 degree celcious into the air at a flow rate of 1.0 x10^-7m^2 s-1 (a) what is the average velocity in the needle?(assume laminar flow), (b) what is the pressure

asked by JAMES on March 28, 2015
88. ## thermodinamics

2. A sample of an ideal gas underwent an expansion against a constant external pressure of 1.0 bar from 1.0 m3, 20.0 bar, and 273 K to 100.0 m3, 1.0 bar, and 273 K. What is the work done by the system on the surroundings

asked by dhaval on February 28, 2014
89. ## Continuity equations

I have the continuity equation as shown here: imgur(dot)com/NRfMphl(dot)jpg I need to find (deduce) this same equations with several considerations: -Assuming taht E is very small and working with minority -Assuming steady state conditions -Assuming low

asked by Continuity Equations - AEC on March 22, 2018
90. ## Physics

Which of these types of motors or engines are heat engines? a. an automobile engine b. an electric motor c. a steam turbine

asked by Sylvia on December 28, 2010
91. ## Physics

Which of these types of motors or engines are heat engines? a. an automobile engine b. an electric motor c. a steam turbine

asked by Anonymous on January 2, 2011
92. ## Physics

One of the most efficient engines ever built is a coal-fired steam turbine in the Ohio valley, driving an electric generator as it operates between 1870C and 430C. What is itsmaximumtheoretical efficiency?

asked by Tori on January 10, 2011
93. ## AP Chemistry

what pressure would have to be applied to steam at 350.degress C to condense the steam to liquid water (Hvap=40.7kJ/mol)

asked by Angel on November 19, 2009
94. ## Solar Energy

With respect to a PV module's I-V and P-V curves, and the module's operating point, consider the following statements: a) When the operating point of the PV module is on the MPP (maximum power point), $$P_{mpp} \lt V_{oc} \times I_{sc}$$ b) For a given

asked by John on November 23, 2013
95. ## Math

A rabbit population satisfies the logistic equation dy/dt=2*10^-7y(10^6-y) where t is the time measured in months. The population is suddenly reduced to 40%of its steady state size by myxomatosis. a) If the myxo' then has no effect how large is the

asked by Page on May 26, 2013
96. ## Biology

What is the osmotic pressure of the salt solution in reverse-osmosis? Select one: a. An equilibrium state where the amount of solvent passing in opposite directions is equal b. An equilibrium state where the amount of solvent passing in one direction is

asked by Clara on May 21, 2015
97. ## Physic

The built-in composite bar BC of length L=2 m is composed of two materials with equal cross sectional area A = 100 mm2. The first material has elastic modulus E=1 GPa. The second material is twice as stiff, with a modulus of 2E or 2 GPa. The bar is

asked by DELL on May 9, 2013
98. ## Chemistry

At 25 °C, the equilibrium partial pressures for the following reaction were found to be PA = 4.10 bar, PB = 5.60 bar, PC = 1.20 bar, and PD = 9.70 bar. 2A(g)+2B(g)-->C(g)+ 3D(g) What is the standard change in Gibbs free energy of this reaction at 25 °C.

asked by Alexis on April 25, 2014
99. ## Chemistry

At a temperature of 23.0 degrees celcius, and a pressure of 2.25 bar what volume would 23.0 g of a compound in the gaseous state with a molecular mass of 207 g/mol occupy?

asked by Nathan on May 27, 2014
100. ## Physics

Water is falling on turbine at a rate of 6000 kg/min the height of fall is 100 m what is the power given to turbine?

asked by Saif on January 2, 2017