Question

In: Mechanical Engineering

A brass rod 25.00 mm long and 5.00 mm in diameter extends horizontally from a casting...

A brass rod 25.00 mm long and 5.00 mm in diameter extends horizontally from a casting at 200°C. The rod is in an air environment with T∞ =20°C and h=30 W/m2·K. What is the temperature of the rod 6.25, 12.50, and 25.00 mm from the casting?

Solutions

Expert Solution

please rate it


Related Solutions

A brass rod 150.00 mm long and 5.00 mm in diameter extends horizontally from a casting...
A brass rod 150.00 mm long and 5.00 mm in diameter extends horizontally from a casting at 200°C. The rod is in an air environment with T∞ =20°C and h=30 W/m2·K. What is the temperature of the rod 37.50, 75.00, and 150.00 mm from the casting?
Question 2 2.1       A brass rod of 25 mm in diameter is enclosed in a steel...
Question 2 2.1       A brass rod of 25 mm in diameter is enclosed in a steel tube. The tube is 10 mm thick with an outside diameter of 50 mm. The bar and the tube are initially 1 m long and are rigidly fastened together at each end. Calculate the stresses in the two materials when the temperature is raised by 80 0C.                                2.2       If the composite bar is then subjected to an axial tensile load of 60 kN, find...
Question 2 2.1       A brass rod of 25 mm in diameter is enclosed in a steel...
Question 2 2.1       A brass rod of 25 mm in diameter is enclosed in a steel tube. The tube is 10 mm thick with an outside diameter of 50 mm. The bar and the tube are initially 1 m long and are rigidly fastened together at each end. Calculate the stresses in the two materials when the temperature is raised by 80 0C.                                2.2       If the composite bar is then subjected to an axial tensile load of 60 kN, find...
16. What is the minimum diameter of a brass rod if it is to support a...
16. What is the minimum diameter of a brass rod if it is to support a 400 N load without exceeding the elastic limit? Assume that the stress for the elastic limit is 379 MPa. 17. A body is rotating according to the equation alpha = 3t where alpha is in rad/s2 and t is in sec. when t=0, the angular velocity is 4 rad/s and angular distance is zero. Compute the angular distance (rad) after t=2 sec. Answer in...
A steel drill rod that is 10 mm in diameter and 20 cm long is being...
A steel drill rod that is 10 mm in diameter and 20 cm long is being heat treated in an oil bath. The 1050°C rod is quenched and held at 700°C and then quenched a second time to 30°C. Calculate the quantities of heat that must be removed at the two quenching stages. Weight density of steel as ρw = 76 kN/m3 , The specific heat of steel is c= 0.50 kJ/(kg . ºC).
A rod of diameter D = 25 mm and thermal conductivity of 60 W/m·K protrudes from...
A rod of diameter D = 25 mm and thermal conductivity of 60 W/m·K protrudes from a furnace with a wall temperature of 200ºC. The rod is welded to the furnace wall and is used as a hangar for instrumentation cables. To avoid damaging the cables, the surface temperature of last 100 mm of the rod must be kept below 100ºC. The ambient air temperature is 25ºC and the convection coefficient is 15 W/m2K. (a) Write the finite-difference equation for...
A spring is to be designed to fit over a valve rod of 15 mm diameter...
A spring is to be designed to fit over a valve rod of 15 mm diameter as shown in figure Q2. The forces acting on the spring while closing and opening of the valve are F1 and F2 respectively. Using the data given table Q2 and assuming that spring has squared and ground ends, Determine: (i) Wire diameter of spring (ii) Outside diameter of spring    (iii) Number of turns    (iv) Stiffness of spring (v) Free length    (vi)...
A 3.20-m-long, 500 kg steel uniform beam extends horizontally from the point where it has been...
A 3.20-m-long, 500 kg steel uniform beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70 kg construction worker stands at the far end of the beam. What is the magnitude of the torque about the bolt due to the worker and the weight of the beam?
A 10-cm-long thin glass rod uniformly charged to 5.00 nC and a 10-cm-long thin plastic rod...
A 10-cm-long thin glass rod uniformly charged to 5.00 nC and a 10-cm-long thin plastic rod uniformly charged to - 5.00 nC are placed side by side, 4.40 cm apart. What are the electric field strengths E1 to E3 at distances 1.0 cm, 2.0 cm, and 3.0 cm from the glass rod along the line connecting the midpoints of the two rods? Specify the electric field strength E1 Specify the electric field strength E2 Specify the electric field strength E3
A straight rod of solid polymer is of length 1 m and diameter 10 mm. The...
A straight rod of solid polymer is of length 1 m and diameter 10 mm. The polymer is linearly viscoelastic with a tensile creep compliance given by: D = 2- exp(-0.1t); Gpa^-1 Where t is in hours. The rod is suspended vertically and a mass of 10 kg is hung from it for 10 hours. a) Find the change of length of the rod. b) Identify the time domain of this property test procedure.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT