Please explain why: *A hot coffee in an open cup is an example of open system *Sealed pressure cooker with a whistle are a closed system
Q: Six years ago, an 80-kW diesel-electric set cost $160,000. The cost index for this class of…
A:
Q: Calculate the support reactions at A and B for the loaded beam. Assume P = 120 lb, w = 106 lb/ft, a…
A:
Q: Determine the acceleration of each body and the tension in the cord supporting block A. Coeff…
A:
Q: Air at a temperature of 40∘C flows through the duct at A with a velocity of 1.5 m/s . ρair = 1.127…
A:
Q: 4. Repeat problem 3 assuming that the column is made of wood for which E = %3D 10 GPa. Ans. 81.34 mm
A: Given Force, F = 40 kN Length, L = 3 m E = 10 GPa Find Length, b
Q: Give an Example of a problem on Regenerative rankine cycle with complete solution and compare it…
A: Example:
Q: A 3-meter solid steel shaft, with an unknown diameter, twists by 5° as it experienced a shear stress…
A: GIVEN DATA- L=3m Angle of twist =5' Shear stress =60MPa G=83GPa
Q: Determine the forces in members BC and CF of the loaded truss. Enter a positive number if in…
A:
Q: Determine the normal force, shear force and moment at point C. (Hint: 30 KN m m
A: To find Normal force shear force Moment at point C
Q: The given figure shows a thermal network with T1 = 325.15 K, T1 = 310.15 K, Rwall = 0.08 K/W, and…
A:
Q: A 2-in water jet with a velocity of 130 fps strikes a single vane moving in the same direction of…
A: Given: Jet diameter, d = 2 in = 2in1 ft12 in = 16ft Jet Velocity, V=130 fps Vane velocity, u=50 fps…
Q: The uniform cross-section of a barge with a semi-cylindrical hull floating in water is shown…
A: The buoyant force is the upward force exerted by a fluid when an object is submerged in it. The…
Q: An amount of Php 4000 is deposited in a bank paying an annual interest rate of 5 % compounded…
A: Compound interest (also known as compounding interest) is the interest on a loan or deposit that is…
Q: Calculate the higher and lower heating values of octane, C3H18, by using the stoichiometric reaction…
A: The enthalpies of formation for the following compounds can be given as: C8H18 → -250.0 kJ/mol O2 →…
Q: An aircraft has a total mass of (1.26x10^2) kg and a wing area of (3.000x10^1) m2. It operated with…
A: Given Data: The density of air, 1.2 kg/m3 The total mass, m=1.26x102 kg
Q: The essential component of a toaster is an electrical element (a resistor) that converts electrical…
A: Given: P = 12 W V = 110 V
Q: You are asked to design a four cylinder four-stroke compression ignition engine for light trucks,…
A: Answer: The stroke length is 0.0996 meter.
Q: Question 3 (a) A two-dimensional flow velocity field in the domain with non-dimensional coordinates…
A: From the provided velocity equation,
Q: A pipe AB carries water and tapers uniformly from a diameter of 4" at A to 8" at B over a length of…
A:
Q: An aircraft has a total mass of (1.18x10^2) kg and a wing area of (2.700x10^1) m². It operated with…
A: Given data Aircraft mass =W = 1.18 x 102 kgWing area = S = 27 m2CL = 1.0CD = 0.1Density of air = 1.2…
Q: pitch of 4 teeth/in, a 2 inch face, 20 teeth, and a pressure angle of 20° with full depth teeth. The…
A: the term moderate applications seems to imply that the gear can be rated by using the yield strength…
Q: 17- Two rigid tanks are connected by a valve. Tank A is insulated and contains 0.2 m' of steam at…
A: Given data as per the question the volume of steam in tank A =0.2 m3 Tank A(considering steam…
Q: Q,B = 1 ½ inches, BC = 4 inches, Q¿C = 3 inches, Q‚E = 2 inches, EF = 5 %3D hes and Q,Q4 = 5 inches.…
A:
Q: Find the volume of the solid generated by revolving the specified region about the given line R…
A:
Q: PROBLEM 1: A proton travels with a speed of 5.02 X 10^6 m/s at an angle of 60° with the direction of…
A:
Q: Determine the diameter of 12 ft long steel line shaft which is subjected to a bending action due to…
A: Question: Determine the diameter of 12 ft long steel line shaft which is subjected to a bending…
Q: Make a free-body diagram of the boom. The boom attaches to the building at dot A. The center of…
A:
Q: In a Rankine cycle, the condition of steam leaving the turbine could be any of the following except…
A:
Q: A centrifugal pump operating at sea level develops 150 ft of head at 1,200 rpm. It is used to pump…
A:
Q: A) Draw a Free Body Diagram of the ABC bar. B) Draw a Free Body Diagram of the CDE piece. C)…
A: According to the details provided in the question, we need to find F.B.D. of the ABC and CDE part…
Q: Determine the magnitudes of the forces C and T, which, along with the other three forces shown, act…
A:
Q: A rod hanging from a support whose unit mass is 3900 kg/ m3 has a cross-sectional area of 400 mm2…
A:
Q: Compute moment strength (capacity) of the beam cross section given. Tension reinforcement area:…
A:
Q: on the compressor and the isouiermaemclency. 3- Air compressor is required to deal with atmospheric…
A:
Q: FIGURE BELOW shows the car having a mass of 1.40 Mg and a center of mass at Gc pulls a loaded…
A:
Q: The three-wire thread measuring formula for inch-based threads is: 1.5155 M = D+ 3G - N Where: G =…
A: Solution: Given Data:
Q: The pressure and temperature of air change from (4.5000x10^0) bar to (1.5000x10^0) bar and from…
A:
Q: A rectangular plate (Figure) is subjected to a vertical force applied at point B and to a couple of…
A:
Q: PROBLEM 2.2 A 1.5 m long steel wire of 6 mm diameter steel wire is subjected to a 3.4 kN tensile…
A: Answer: (a) The elongation in the wire is 0.902 mm. (b) The corresponding normal stress in the wire…
Q: Internal pressure and axial tensile force are applied to an open cylindrical tank 605 mm in diameter…
A:
Q: For a 34.4 mm diameter smooth pipe, calculate the threshold velocity (m/s) and corresponding flow…
A: Given data:
Q: The cantilever beam consists of a rectangular structural steel tube shape (E = 33000 ksi; I= 332…
A:
Q: mnot Thot = 75°C Tout-? mcold Teota = 18°C %3D Hot and cold stream of water are mixing together as…
A:
Q: Why are the highest values of Gxy (shear modulus) and Vxy (Poisson ratio) at different angles of…
A:
Q: 20- Air enters a nozzle steadily at 280 kPa and 77°C with a velocity of 50 m/s and exits at 85 kPa…
A:
Q: (2) A diesel engine developing 1,850 hp at 105 rpm is used on a ship to drive the propeller. The…
A: Shaft and axle are machine members which revolve in the machine like pulley and gears etc. As the…
Q: For a mesh with 4-node pyramidic elements (i.e. lower order 3D solid elements) and 214 nodes in…
A: Solution: Given Data: 214 total number of nodes.
Q: Action Potentials Graded (Local) Ptentials
A: Potentials that have been graded. Graded potentials are local variations in the membrane potential…
Q: A refrigerating system using R - 22 is used to keep the refrigerated space at –30°C. The…
A: Given data: The refrigeration load is given as QR = 15 kJ/sConsider the mass flow rate required in…
Q: V = 100 fps, u = 40 fps, alpha= 30°. Determine beta.
A:
Please explain why:
*A hot coffee in an open cup is an example of open system
*Sealed pressure cooker with a whistle are a closed system
Step by step
Solved in 2 steps with 2 images
- Frost accumulates on the evaporators of forced-draft refrigerators because A. they are generally located within a house. B. they are generally located in high-humidity areas. C. they are low-temperature appliances. D. there is a heat exchange with the suction line.Define a near-azeotropic refrigerant blend, and give twoexamples.In order to remove moisture from a refrigeration system using a vacuum pump, it must be in a _____state.
- A tankless water-heating system gets its heat from thesystem's_______.The most popular refrigerant used in the past for residential air-conditioning is R- ________.Evaporative cooling PLEASE DO NOT USE PSYCHROMETRIC CHART. THANK YOU In the diagram below inlet air is drawn over a pool of liquid water in a steady-state, steady-flow isobaric process. Evaporation on the pool resultsin saturated air at the exit. The pool of liquid water is assumed to be at the same temperature as the exitair. Discharge fans at the exit provide a volumetric flow rate of 800,000 ft3/min. In the diagram above inlet air is drawn over a pool of liquid water in a steady-state, steady-flow isobaric process. Evaporation on the pool resultsin saturated air at the exit. The pool of liquid water is assumed to be at the same temperature as the exitair. Discharge fans at the exit provide a volumetric flow rate of 800,000 ft^3/min. Problem #1: Assume that the exit temperature is T2 = 90 °F. For this model of the system and from thedata provided determine:a) The mass flow rate dry air through the system (lbm/sec).b) The rate of heat that is output from the R-134a condenser Qout…
- What is NOT an example of unsteady-state flow? a. Deflating a helium balloon b. Filling up an evacuated tank c. Boiling water in a pressure cooker d. Running a gas stream through a fanPLEASE DO NOT USE PSYCHROMETRIC CHART. THANK YOU In the diagram below inlet air is drawn over a pool of liquid water in a steady-state, steady-flow isobaric process. Evaporation on the pool resultsin saturated air at the exit. The pool of liquid water is assumed to be at the same temperature as the exitair. Discharge fans at the exit provide a volumetric flow rate of 800,000 ft3/min. Problem #2: Assume that the R134a chiller is turned off such that Qout = 0, but the evaporative coolersystem continues to operate. Determine:a) The exit temperature, T2 (°F)b) The mass flow rate dry air through the system (lbm/sec).c) The rate of liquid water resupply required for continuous operation (lbm/hour).| Part of a refrigeration system operates at steady state with Refrigerant 22 as shown in the figure below. There is no significant heat transfer to or from the heat exchanger, valve, and piping. Kinetic and potential energy effects are negligible. State 1 is a saturated liquid. What temperature is it, in °F? Describe the refrigerant at state 4 as one of the following: compressed liquid, saturated liquid, tyro-phase mixture, saturated vapor, or superheated vapor. Determine the required mass flow for the given operating conditions, in lb/min. Determine the rate of heat transfer between the evaporator and its surroundings, in b. Btu/min. Make sure to clearly state the direction of heat transfer. 1. T=10°F P= 15 Ibf in (AV), = 9.5 ft/min. Pi= 120 Ibf/in.? Heat exchanger Throttling valve Evaporator P 15 lbfin.2 X3 = 1.0 P2= 15 lbf/in.2
- Q.1. A refrigeration process with interstage cooling uses refrigerant HFC-134a, and the outlet of the condenser is to be saturated liquid at 40°C. Refer to the following figure for stream numbers in your solution. The pressure of the flash chamber and the intermediate pressure between compressors is to be 290 kPa. The evaporator is to operate at -20°C and the outlet is to be saturated vapor. The flowrate of stream 1 is 23 kg/h. The flash chamber may be considered adiabatic. The compressors may be considered to be 80% efficient. a) What is the power input required to the first compressor? b) What are the flowrates of streams 6 and 7? What is the enthalpy of stream 4? Hot Side 6 5 Condenser 2nd Stage Compressor Throttle Valve 7 Flash Chamber Vapor Phase Only 1st Stage Compressor 8 Throttle Valve Evaporator 1 2 Cold SidePossible problems an air conditioner can have and solutions to the problemsQ2 (a) Using appropriate sketches, draw a two-stage refrigeration system with a flash chamber. Explain briefly the function of flash chamber in this system.