A composite wall constructed of 2.5cm of steel (k-60.5 W/m-K) and 5.0 cm of aluminum (k177W/m-K) separates two liquids. The liquid on the steel side has a film coefficient of 15W/m²-K and a temperature of 400degC. The liquid on the steel side has a film coefficient of 30W/m² and a temperature of 100degC. Assume steady state conditions, what is the temperature at the steel-aluminum interface in deg C
Q: The cords suspend the two buckets in the equilibrium position as shown in . Bucket A has a weight of…
A: Given, Using Lami's theorem and drawing FBD,
Q: For the following figure in writing the dimensions if we write the symbol R Instead of the value of…
A: For the following figure in writing the dimensions if we write the symbol R Instead of the value of…
Q: Situation 5. Determine the forces in cables AC and AB needed to hold the 20-kg ball D in…
A: GivenF=300Nm=20kgd=1m
Q: During a steady right turn, a person exerts the forces shown on the steering wheel. Note that each…
A:
Q: where does the equation -atheta = rtheta** + 2r*theta* come from? More specifically where does the…
A:
Q: During a steady right turn, a person exerts the forces shown on the steering wheel. Note that each…
A: The given data in the problem is represented in the following attached image: We have to calculate,…
Q: We will explore an example that connects the basic definitions and equations for different modes of…
A:
Q: The thermodynamic process of a substance when it passes through device changes in a constant…
A:
Q: Two gaseous streams containing the same fluid enters a mixing chamber and leaves as a single stream.…
A:
Q: - A 40- kg block is placed on the uniform 10-kg beam, that is supported by the cable, which is…
A: Given:Mass of the block ,mb=40 kgMass of the cantilever beam, mc=10 kCoefficient of static friction,…
Q: Compute the moment (positive if counterclockwise, negative if clockwise) of the 0.54-lb force about…
A:
Q: 0.4 m D d = 0.15 m Part A If the 5.2-kg block is suspended from the pulley B and the sag of the cord…
A:
Q: Determine the natural frequency of a pendulum whose length is 41 ft. in Hz
A: Given Data: Pendulum length l = 41 ft The period for the oscillation of pendulum is given by…
Q: In traveling a distance of 4.3 km between points A and D, a car is driven at 81 km/h from A to B for…
A:
Q: 1500 A 3600 B + M 1800 С 2400
A: Given, first let's find out which force F_AB and F_BC is greater.
Q: A transmission tower is held by three guy wires attached to a pin at A and anchored by bolts at B,…
A:
Q: Strategy: You can write the position of P relative to O as s = (2 ft) cos 0 + (2 ft) cos 0 and then…
A:
Q: Provide the diagram for the problem. Choose the correct answer and provide complete solution.…
A: given; height(h1)=500ft =152.4mheight(h2)=250ft…
Q: briefly discuss ways of protecting a mental from corrosion
A:
Q: 1. Tensile and compressive stresses caused by forces perpendicular to the areas on which they act…
A: Simple stresses are those stresses which can be expressed as Force/Area. They can be classified as…
Q: Water at 60°F flows from a lake through 500 ft of 4- in ID cast iron pipe at a water turbine 250 ft…
A:
Q: The rigid beam is supported by a pin at C and an A992 Steel guy wire AB of length 6 ft. A $ 7 B ↓ ↓…
A:
Q: The reading taken in a room from sling psychrometer gave a dry and wet bulb temperature of 25°C and…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: Shown in figure below, the manometer fluid of density 875 kg/m3 shows a column height difference of…
A: Given data the density of the manometric fluid (ρm) = 875 kg/m3 ∆h = 3 cm Po = 101 kPa To…
Q: The piece of plastic is originally rectangular. Suppose that a = 300mm and b = 420 mm 2mm 5mm-> 2mm…
A:
Q: 06-A 40-kg block is placed on the uniform 10-kg beam, that is supported by the cable, which is…
A: Given:Mass of the block, mb=40 kgMass of the cantilever beam, mc=10 kgCoefficient of static…
Q: The system contains fart gas at 300 kPa, with volume of 0.2 m3 and at 40°C. More fart is added at…
A:
Q: A solid spherical material made of rubber with was exposed to a change in pressure of 85 Pa. Its…
A: Given Data :- Change in pressure = 85 Pa Volume Reduced (Change in Volume / Original Volume) = - 8%
Q: A particle moves along a straight line with a velocity in millimeters per second given by v=…
A:
Q: The position of a particle in millimeters is given by s= 39 - 16t+t² where t is in seconds. Plot the…
A: GivenS=39-16t+t2plotS-tV-tfor first 13s
Q: Consider the tank filled with water. The tank has a conical portion ABC removed from it as shown in…
A:
Q: The piston/cylinder device contains 0.4 kg of water at a temperature of 180 °C and pressure of 0.8…
A: Given:Mass of water, m=4 kgInitial temperature of water, Ti=180°CInitial pressure of water, Pi=0.8…
Q: A 3x3m plate at 500 degC is suspended vertically in a very large room. The plate has an emissivity…
A: Introduction: The energy emitted from the surface in relation to the energy radiated from the black…
Q: Air enters the compressor of an ideal air standard brayton cycle at 100 kPa, 300 K, with a…
A: Disclaimer: “Since you have posted a question with multiple sub-parts, we will solve the first three…
Q: 5. A 12-in.-diameter circular plate is placed over a fixed bottom plate with a 0.1-in. gap between…
A:
Q: A rigid tank contains some liquid water at 30 °C. The rest of the tank is filled with atmospheric…
A:
Q: . A rigid tank contains some liquid water at 30 °C. The rest of the tank is filled with atmospheric…
A: Given Condition :- Rigid container with atmospheric air inside and liquid water at 30 °C
Q: Q3 - Blocks A, B, C, and D have weights of 50 N, 25 N, 20, and 15 N. respectively as shown in Fig.3.…
A:
Q: - Neglecting friction forces, and the radius of the pulley. Determine the following: 1- The tension…
A: Given:Force acting on the cantilever veam ,F=140 N
Q: a. Solve for the two (2) atmospheric condition, Pn1 & Pn2 at 32.68 0C and 41.12 °C. b. Calculate…
A: Given: (a): For temperature→T1=32.68°C=305.83 K The pressure will be: →Pn1=ρRT1…
Q: Plot and determine the values of h5, W5, twb5 & tdb5 involving adiabatic mixing as shown below. Air…
A: Given: Tdb1 = 15 oC ∅1=90% Tdb2 = 24 oC ∅2=60% Tdb4 = 32 oC Twb4 = 26 oC
Q: If water and oil are one of the fluids presented in the following figure. Which of the given lines…
A: Introduction: Shear stress is defined as the tangential force per unit area that operates…
Q: The flanged steel cantilever beam with riveted bracket is subjected to the couple and two forces…
A:
Q: The magnitude of the vector r in figure 7 is 240mm. Determine a. the rectangular representation of…
A:
Q: Air enters the compressor of an ideal air- standard brayton cycle at 100 kPa, 300 K, with a…
A: Disclaimer: “Since you have posted a question with multiple sub-parts, we will solve the first three…
Q: Packages enter the 10.9-ft chute at A with a speed of 3.4 ft/sec and have a 0.39g acceleration from…
A:
Q: - Blocks A, B, C, and D have weights of 50 N, 25 N, 20, and 15 N, respectively as shown in Fig.3.…
A:
Q: What precisely is stress testing, and why is it advantageous to begin with
A: A device's ability to continue functioning under sudden, abrupt motion changes that are typical of…
Q: 2. Determine the moment of inertia of the shaded area with respect to the y axis. 12 mm 8 mm- 24 min…
A:
Q: Problem: In an ideal Rankine reheat cycle, the steam throttle condition is 17 Mpa and 420C. The…
A: Given:Pressure at the entry to the high pressure turbine, P1=17 MPaTemperature at the entry to the…
Step by step
Solved in 3 steps with 2 images
- Located near the bottom of an insulated cylinder is a rigid plate. Between the rigid plate and the bottom of the cylinder is 0.4 kg (ma) of air at 250 kPa (Pa1) and 300 K (Ta1). Between the rigid plate and a moveable piston 0.5 kg (mw) of superheated water vapor at 300 Celsius (Tw1) and 100 kPa (Pw1) is added. Consider these to be the initial conditions (state 1) of this multi-component system. The rigid plate is conductive allowing heat to pass between the air and water vapor, but the piston is well insulated. The water vapor is manually compressed in an unknown process until the volume of water vapor (Vw2) is halved and the pressure is 200 kPa (Pw2), at which point the air and water vapor are in temperature equilibrium.Determine the following:A. The change in entropy of air and water in kJ/K B. The change in entropy of the combined system, S2-S1, in kJ/K, neglecting the mass of the rigid plate C. The entropy produced, σ, of the combined system during the processTo cool a piece of glass, initially at a temperature of 93°C, it is immersed in an aluminum tray, initially filled (to the brim) with water at 12°C. Assuming that the assembly (tray + water + glass piece) is an isolated system, determine the final temperature of the glass piece. Data:Glass pieceShape: solid parallelepipedDimensions: L = 1.2 m, L = 0.6 m and h = 0.5 mDensity: 2490 kg/m3Constant pressure mass heat: 840 J.kg-1.K-1 Initial temperature: 93°CAluminum trayShape: hollow block without lid External dimensions: L = 2 m, W = 1 m, h = 0.8 m Wall thickness: e = 12 mmDensity: 2800 kg/m3Constant Pressure Mass Heat: 910 J.kg-1.K-1 Initial Temperature: 12°CWaterDensity: 1000 kg/m3Constant pressure mass heat: 4180 J.kg-1.K-1 Initial temperature: 12°C169 g of solid water (i.e. ice), at -17 °C, is placed into a sealed, insulated container with a volume of 0.29 m^3. A 1457 W heater is used to heat and change the phase of the sample until it is a gaseous water (i.e. steam). The heater runs for 433 s. What is the pressure, in kPa, of the gaseous water in the container at the end of the heating process? Round your answer to the first decimal place.
- 350 pipes are fixed as square in a pipe bundle used for condenser. PipeThe outer diameters are 8 mm and the steam at 0.2 bar is desired to be condensed on the pipes. pipe outer The surface temperature is kept constant at 30 °C. If the length of the pipes is 1.5 m, the heat transferred in the systemCalculate the amount of energy and the amount of condensed steamIn a room unoccupied by people, a 2kW electric heater is turned on and kept on for 15 minutes. The enclosure is at atmospheric pressure of 100 kPa, has dimensions of 3 x 5 x 10 meters, and loses heat through its walls at a rate of 1000 kJ per hour. Calculate what temperature the air will reach after 15 minutes. solve it correctly please. ISteam at a pressure of 11 bar and a temperature of 320C is containedin a large vessel. Connected to the vessel through a valve is a turbinefollowed by a small initially evacuated tank with a volume of 0.60 m3.When emergency power is required, the valve is opened and the tankfills with steam until the pressure is 11 bar. The temperature in the tankis then 400C. The filling process takes place adiabatically and kineticand potential energy effects are negligible. Determine the amount ofwork developed by the turbine in kJ.
- A cylinder container is divided into two equal sections by thermally isolated, frictionless piston, as shown in the figure. One section contains water and the other air. The cylinder is isolated except the one face of the water section. Each section has an initial volume of 100 liter. The initial temperature of the air is 40oC and the water is 90oC with steam quality of 10%. The water are heated slowly until the entire section of the water is filled with saturated steam. Find the final pressure and the amount of heat transported to the container. Assume: the heat transfer is a reversible process.Assume for ideal gas the following relation between p and v: #$" #$% !#" ! !" = ! "" ; k = 1.4Most automobiles have a coolant reservoir to catch radiator fluid that may overflow when the engine is hot. Such a radiator, made of copper, is filled to its 12-L capacity when at 10.0°C. -What volume of radiator fluid, in liters, will overflow when the radiator and fluid reach their 99.5°C operating temperature, given that the fluid’s thermal coefficient of volume expansion is 400.0 × 10-6 / °C? The coefficient of volume expansion for copper is 5.1 × 10-5 /°C.Determine the quantity (volume) of saline water in a steam generator. The heat energy of 1590 kJ is supplied to saline water in the steam generator to heat from 26°C to 118°C for the generation of water vapor, Take the density & specific heat of the solution as 1011 kg/m³ & 3.4 J/kg°K respectively. Solution: Change in Temperature (in K) Mass of the saltwater (in kg) Quantity (Volume) of saltwater (in m³)
- A mass of ice at -7OC is needed to cool 114 kg of vegetables (Cp = 3.35 KJ /kg.K )ina bunker for 24 hours . The initial temperature of the vegetables is assumed to be 29OC . It is also assumed that the average temperature in the bunker is 7OC within the 24 -hour period . If the heat gained per hour in the bunker is 25% of the heat removed to thevegetables from 30 OC to 8OC, what would be the required mass of ice ?A cylinder of cross-section area A is divided into two chambers 1 and 2, by means of a frictionless piston. The chambers initially have equal length L. Both chambers are filled with 1 mole of ideal gas, wlth initial pressures M 2Po and Po, respectively. The piston is then allowed to slide freely, whereupon the gas in chamber 1 pushes the piston a distance 1 to equalize the pressure. Consider the following two cases: m (i) The outer walls of the chambers and the piston do not w w mw m allow heat transfer. Denote the distance l as la in this case. (ii) The piston does not allow heat transfer but the chambers are in contact with two heat reservoirs w ww separately, at temperature Tl and T2 for chambers 1 and 2, respectively. Denote the distance 1 as ld in this case. Calculate the ratio la/ld ? Does this ratio have a small or big valaA 20-cm diameter copper ball is to be heated from 110°C to an average temperature of 170°C in 90 minutes. Taking the average density and specific heat of copper in this temperature range to be p=8950 kg/m and Cp=0.395 kJ/kg • °C, respectively, determine the total amount of heat transfer to the copper ball in kj (Area of sphere: TID2; Volume of sphere=TTD/6)? A 88.64 kJ B 886.4 kl 78.84 kJ D 788.4 kJ