Consider an object of characteristic length 0.015 m and a situation for which the temperature difference is 10°C. Evaluating thermophysical properties at the prescribed conditions, determine the Rayleigh number for the following fluids: air (1 atm, 400 K), helium (1 atm, 400 K), glycerin (285 K), and water (310 K).
Q: A 4-lb weight is attached to a spring having a stiffness k = 10 lb/ft The weight is drawn downward…
A:
Q: 3. Figure 3 shows a system consisting of wedge A and block B connected by an inextensible cable…
A: To find:Determine the acceleration of block B immediately after P is applied.And the tension in the…
Q: Draw an open center circuit that uses a double-end rod hydraulic cylinder to extend and retract a…
A: Concept Used:Open Center Circuit with Double-Acting Cylinder and Center LockThis hydraulic circuit…
Q: 5.51 A horizontal, circular cross-sectional jet of air having a diameter of 6 in. strikes a conical…
A:
Q: A The bar in the figure supports two loads P₁ = 300 lb, and P2 = 100 lb. The bar has length L = 240…
A: The total change in lenght of bar.Given:The length of the bar is .Young's modulus is .Poisson's…
Q: Components that suffered fatigue failure during operation can be identified byseveral characteristic…
A: Some characteristic features of fatigue failure in components include:Explanation:Crack Initiation:…
Q: total deformation in ansys
A: The objective of the question is to understand how to calculate the total deformation in ANSYS, a…
Q: A steel shaft is subjected to a fluctuating torque, T, as shown below. All surfaces are machined,…
A:
Q: A massless spring of spring constant 395 N/m is submerged in a viscous fluid wit damping constant b…
A: The spring constant is The damping constant is The mass of block is The initial displacement is The…
Q: Task 1. Calculate internal moment M (in kN m) in the beam's cross-section located at x0 = 3.0m from…
A:
Q: A solid 4340 HR Steel tie rod of length Lrod = 850 mm is employed to compress a 6061-T6 aluminum…
A: 4340 HR steel rod.Diameter of the rod, drod= 22.5 mmLength of the rod, Lrod= 850 mm6061-T6…
Q: A Beam supported at A and C and is loaded as shown. Sketch the SF and BM diagrams. B C 12 12 ==…
A: Given:The value of the length, The value of
Q: PROBLEM 2: Replace the three tension forces acting on the eye bolt by a single resultant force R.…
A:
Q: K 1.calculate virtual temp of air with an actual temperature of 25C and pressure of 950hpa, and the…
A:
Q: 5. The figure below shows a countershaft with helical gear (B), bevel gear (D), and two supporting…
A: For the surfaces in contact, the force that arises between mating gears is normal.Axial force Fa,…
Q: 2. (pp11-2p151gutay) - Give reasons for the adoption of the modified Rankine cycle. Steam is…
A: Several factors lead to the adoption of the modified Rankine cycle, including:Enhanced efficiency:…
Q: A heat engine using a diatomic gas follows the cycle shown in the figure. Its temperature at point 1…
A:
Q: Find the eigenvalues, eigenvectors, and the matrix X that diagonalizes the given matrix via a…
A: Ans Given Now make a new matrix by subtracting from the diagonal entries of the given matrix A…
Q: == For the simply-supported beam shown, a = 45 in, L = 10.2 ft, and P = 196 lb. Determine the…
A: Draw FBD
Q: +0.040 Holes of diameter 25.0+0.020 mm are assembled interchangeably with the pins of diameter…
A: To determine the minimum clearance in the assembly.
Q: A basketball player makes a 3-point shot from 25 ft from the hoop. The ball is in the air for 1 s,…
A:
Q: m radius cloud droplet to grow via condensation into a 3500 um rain droplet. Assume a…
A: The initial radius of the droplet is .The final radius of the droplet is .The super-saturation is…
Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…
A:
Q: 2. (#6-DimagPP18) A reheat regenerative steam cycle operates with condenser pressure of 0.007 MPa.…
A: Condenser pressure, P1 = 0.007 MPaInlet conditions to the turbine: P2 = 13.5 MPa, T2 = 540°CTurbine…
Q: Typical turbocharged 4-cycle diesel engines will love how much power for each 1000-feet of…
A:
Q: n in the Fig. 3, the CM of a cylinder SR is connected to the top of hoop of
A: The mass if cylinder is .The radius of the cylinder is .The mass of the hoop is .The spring…
Q: At the end of the power stroke in an Otto cycle (i.e., bottom dead center), the conditions in the…
A:
Q: A tube 2 mm thick has the shape shown in Fig. P-340. Find the shearing stress caused by Torque of…
A:
Q: Draw rankine cycle with one open type feed water heater. Assume the condition of the steam before…
A: The pressure at the inlet to the turbine, The temperature at the inlet to the turbine, The pressure…
Q: Two metal bars are fastened together at the bolted flange connection shown. There are 2 total bolts…
A:
Q: A capillary tube has an 8mm inside diameter through which liquid fluorine refrigerant R-11 flows at…
A: To find(a) What is the required velocity in the model for dynamic similarity?(b) When dynamic…
Q: For a hollow shaft of external and internal diameters 10 cm and 4 cm respectively, the torsional…
A:
Q: 7. Find the distance a person can be from the wall and still be in equilibrium. Hanging mass = 21 kg…
A:
Q: PROBLEM 3: A pole AB is being lifted using cables BC and BD. The pole is tilted at an angle of 60⁰…
A: Forces acting at BC and BD are 26.1 kN and 11.3 kN respectively.The pole AB is making 60° with x…
Q: = Air flows radially outward between the two parallel circular plates shown in the figure below. The…
A:
Q: A BMW vehicle consumes 2.5 gallons of gasoline in 60 minutes while operating at3000 RPM. Calculate…
A:
Q: (#20ppVIII-20PrM) - The entrance and exit enthalpies of a steam turbine are 4000 and 3000 kJ/kg…
A: Given:The enthalpy at the entrance of the steam turbine is The enthalpy at the entrance of the steam…
Q: The 50-kg crate is stationary when the force P is applied. Determine the resulting acceleration of…
A:
Q: 7. Find the distance a person can be from the wall and still be in equilibrium. Hanging mass = 21 kg…
A:
Q: The forked rod is used to move the smooth 3 lb particle around the horizontal path in the shape of a…
A:
Q: For a hollow shaft of external and internal diameters 10 cm and 4 cm respectively, the torsional…
A: Given+Outer diameter= 100 mmInner diameter= 40mmRequired- Tortional section modulus
Q: 4- The airplane, traveling at a constant speed of 50 m/s, is executing a horizontal turn. If the…
A:
Q: Describe the Bernoulli's equation and its applications in fluid mechanics.
A:
Q: The bar in the figure supports the loads indicated with P = 3 kN, applied in the x-direction. The…
A:
Q: For a hollow shaft of external and internal diameters 10 cm and 4 cm respectively, the torsional…
A: .
Q: cold Depicted in Fig. Q1 is an irreversible refrigerator whose compressor is powered by a reversible…
A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…
Q: A turbojet engine is shown in the figure below. The conditions at State 1 are 300K, 100 kPa. The…
A: The pressure at point 1 is The temperature at state 1 is The pressure ratio for compressor is The…
Q: After correcting the adjustment of the travelling microscope, the student repeats the experiment…
A: The sensitivity of the measurement rises when utilizing a thicker glass block since light penetrates…
Q: Part A A curve of radius 68 m is banked for a design speed of 95 km/h. If the coefficient of static…
A:
Q: Required information A crate having a weight W= 700 lb is supported by several rope-and-pulley…
A:
Not Ai generated answers, I need to understand please show all steps.
Step by step
Solved in 1 steps with 1 images
- In the arctic sea, the ice sheets are melting. Let's calculate the temperautre distribution in one such ice sheet. The sheet is 2 m thick. Under the sheet there is ice-water mixture and it can be assumed that the temperature of the bottom surface of the ice sheet is approximately 0°C. Air at -20°C is blowing above the sheet. The convection coefficient of air is 15 W/m².K. The thermal conductivity of ice is 2.2 W/m.K. What is the temperautre of icesheet at its center (i.e., at 1 m from the surface)?A food product with 80% moisture content in a 5 cm diameter can wants to be frozen. The density of the product is 1000 kg / m cubic, the thermal conductivity is 1.0 W / (m K), and the initial freezing temperature is -1.75 ° C. After 10 hours in -25 ° C freezing medium, the product temperature becomes -10 ° C. Estimate the convection heat transfer coefficient of the freezing medium. Assume the can as an infinite cylinderA 10 cm thick piece of beef steak will be frozen in the freezer room -30 ° C. This product has a moisture content of 73%, a density of 970 kg / m³, and a thermal conductivity (frozen) of 1.1 W / (m K). Estimate the freezing time. using the Plank equation. This product has an initial freezing temperature of -1.75 ° C, and the movement of air in the freezing room gives a convective heat transfer coefficient of 10 W / (m² K). t f = .... hour.
- A food product with 80% moisture content in a 5 cm diameter can wants to be frozen. The density of the product is 1000 kg / m³, the thermal conductivity is 1.0 W / (m K), and the initial freezing temperature is -2.25 ° C. After 10 hours in the freezing medium -35 ° C, the product temperature becomes -10 ° C. Estimate the convection heat transfer coefficient of the freezing medium. Assume the can as an infinite cylinder. h = Answer W / (m² K).A food product with 73% moisture content in a 5 cm diameter can wants to be frozen. The density of the product is 970 kg / m³, the thermal conductivity is 1.2 W / (m K), and the initial freezing temperature is -2 ° C. After 12 hours in the freezing medium -30 ° C, the product temperature becomes -10 ° C. Estimate the convection heat transfer coefficient of the freezing medium. Assume the can as an infinite cylinder. h = AnswerW / (m² K).A piece of beef steak 7 cm thick will be frozen in the freezer room -40 ° C. This product has a moisture content of 73%, a density of 970 kg / m³, and a thermal conductivity (frozen) of 1.1 W / (m K). Estimate the freezing time. using the Plank equation. This product has an initial freezing temperature of -1.75 ° C, and the movement of air in the freezing room gives a convective heat transfer coefficient of 10 W / (m² K). t f = ...... hour.
- A piece of beef steak 7 cm thick will be frozen in the freezer room -40 ° C. This product has a moisture content of 73%, a density of 970 kg / m³, and a thermal conductivity (frozen) of 1.1 W / (m K). Estimate the freezing time. using the Plank equation. This product has an initial freezing temperature of -1.75 ° C, and the movement of air in the freezing room gives a convective heat transfer coefficient of 15 W / (m² K). t f = Answerhour.A piece of beef steak 5 cm thick will be frozen in the freezer room -25 ° C. This product has a moisture content of 73%, a density of 970 kg / m, and a thermal conductivity (frozen) of 1.1 W / (m K). Estimate the freezing time. using the Plank equation. This product has an initial freezing temperature of -1.75 ° C, and the movement of air in the freezing room gives a convective heat transfer coefficient of 10 W / (m² K). tf =A piece of beef steak 5 cm thick will be frozen in the freezer room -30 ° C. This product has a moisture content of 73%, a density of 970 kg / m³, and a thermal conductivity (frozen) of 1.1 W / (m K). Estimate the freezing time. using the Plank equation. This product has an initial freezing temperature of -1.75 ° C, and the movement of air in the freezing room gives a convective heat transfer coefficient of 10 W / (m² K). t f =
- Small potato balls of 0.5 cm radius (can be approximated as a sphere) baked in the oven and initially at a uniform temperature of 170°C. Assume, potatoes have a density of 650 kg/m³, specific heat of 3400 J/kgk and conductivity of 1 W/mK. You want to eat potatoes quickly without burning your tongue so that you have decided to cool them down with forced convection. Air h, Te hot potato initially @ T; Air temperature is 20°C and the convective heat transfer coefficient is 80 W/m?K. Calculate the time (in seconds) required for its surface temperature to drop 130°C. Round the value you calculated and write it as an integer!!! For example, if you find 8.2, write is as 8. Answer:Obtain the following basic equations modeling natural convection in the two-dimensional plane at steady conditions in terms of the given dimensionless quantities. Note: The buoyancy term in the y-momentum equation will be obtained based on dimensionless numbers.19 mm diameter steel balls are quenched by heating to 989 K followed by slow cooling to 400 K in an environment with air at T∞ = 325 K and h = 39 W/m2.K. Assuming that the steel properties are k = 40 W/m.K, ρ = 7800 kg/m3 and C = 600 J/kg.K, estimate the time (in "minutes") required for the cooling process. Bolas de aço com 19 mm de diâmetro são temperadas pelo aquecimento a 989 K seguido pelo resfriamento lento até 400 K em um ambiente com ar a T∞ = 325 K e h = 39 W/m2.K. Admitindo que as propriedades do aço sejam k = 40 W/m.K, ρ = 7800 kg/m3 e C = 600 J/kg.K, estime o tempo (em "minutos") necessário para o processo de resfriamento.