First Law-Exercise: Problem 1: A volume 10 m3 contains 8 kg of oxygen at a temperature of 300 K. Find the work necessary to decrease the volume to 5 m3‚ (a) at a constant pressure and (b) at constant temperature. (c) What is the temperature at the end of the process in (a)? (d) What is the pressure at the end of process in (b)? (e) Show both processes in the p-V plane. Problem 2: The temperature of an ideal gas at an initial pressure p1 and volume V1 is increased at constant volume until the pressure
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Introduction Advances in technology are changing the way the movie industry is doing business. Today’s movie consumers are looking for more convenient ways of viewing films without seating in a movie theatre. They are also seeking better quality and sharper images. To stay competitive and reduce the challenges associated with technological developments the industry must identify best practices and apply those practices to problems the organizations might face. Best Practices in the Movie
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The heat removal comes from the air conditioners which remove 5 kW each. Thus for the net Q to be zero we must have N air conditioners such that (5 kW)N = 9.167 kW. To satisfy this requirement‚ we must have two air conditioning units. 2 A 0.5 m3 rigid tank contains regrigerant-134a initially at 160 kPa and 40% quality. Heat is now transferred to the refrigerant until the pressure reaches 700 kPa. Determine (a) the mass of
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The surface area of the smaller frustum is 450 cm2. (c) Calculate the surface area of the larger frustum. ........................ cm2 (2 marks) ————————————————————————————————————————— Question 2 (a) Factorise 2x2 + 19x - 33 (2 marks) A cone fits exactly on top of a hemisphere to form a solid toy. The radius‚ CA‚ of the base of the cone is 3 cm. AB = 5 cm. (b) Show that the total surface area of the toy is 33p cm2. (2 marks) The radius of the base
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Low Voltage Analog Circuit Design Techniques: A Tutorial IEEE Dallas CAS Workshop 2000 Edgar Sánchez-Sinencio March 27‚ 2000 http://amsc.tamu.edu/ Texas A&M University Analog and Mixed-Signal Center Low Voltage Analog Circuit Design Techniques: Roadmap Low voltage (LV) power supply circuit design techniques are addressed in this tutorial. In particular: (i) Introduction; (ii) Transistor models capable to provide performance and power consumption tradeoffs; (iii) Low voltage
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angle of Vee notch‚ θ = 90° Volume (L) Height‚ H (m) Time‚ t (s) 3.00 0.01 56.20 3.00 0.02 15.84 3.00 0.03 7.56 3.00 0.04 3.64 Calculations Part A: Rectangular Notch Volume Collected (m3) Height of Water Level‚ H (m) Time for Collection‚ t (s) Volume Flow Rate‚ Qt (m3/s) H3/2 Rectangular Notch (m3/2) Rectangular Notch Discharge Coefficient‚ Cd 0.003 0.010 26.73 1.12×10-4 1.00 × 10-3 1.264 0.003 0.020 14.76 2.03×10-4 2.83 × 10-3 0.810 0.003 0.030 8.91 3.37×10-4 5.20 × 10-3 0.732 0.003 0
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CHAPTER 6 MECHANICAL-PHYSICAL SEPARATION PROCESSES Introduction Separation Processes Many chemical processes materials and biological substances occur as mixtures of different components in the gas‚ liquid‚ or solid phase. In order to separate or remove one or more of the component from its original mixture‚ it must be contacted with another phase. The two-phase pair can be gas-liquid‚ gas-solid‚ liquid‚ or liquid-solid. Absorption When the two contacting phases are a gas and a liquid
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78446 EST CE71 EcoBuild 4pp-V3:EST 20/08/2010 09:32 Page 1 CE71 Insulation materials chart Thermal properties and environmental ratings 78446 EST CE71 EcoBuild 4pp-V3:EST 20/08/2010 09:32 Page 2 02 03 Insulation materials chart This chart details the thermal conductivities‚ environmental ratings and typical applications of insulation materials available in the UK. It is designed as an aid to specification. Note that the coloured cells indicate only the most common uses
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system: 1 x 103kg/m3 = 1 g/cm3 American engineering system: 62.4 lbM/ft3. Concentration derived dimension and is usually expressed gravimetrically as the mass of a material A in a unit volume consisting of a material A and some other materials B. Concentration of A in a mixture of A and B: C_A=M_A/(V_A+V_B ) where CA = concentration of A M¬A = mass of material A VA = volume of material A V¬B = volume of material B Basic unit for concentration is kg/m3 Most widely used
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1/9/2013 Mass and Haul Diagram HAUL : product of earth excavated and the distance it was transported to form an embankment or to be disposed as waste. unit: meter – station (metric) = 1 m3 to be transported FREE HAUL DISTANCE (FHD) : fixed distance within which the hauling of material is not paid for but it is assumed to be included in the cost of excavation. OVERHAUL (OH) : product of volume in excess of the free haul mass and the length of overhaul in which payment is already required. LENGTH
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