Mechanical Engineering

3) (1 point) The boundary layer flow separates from the surface if (a) du/dy=0 and dp/dx = 0 (b) du/dy = 0 and dp/dx > 0 (c) du/dy = 0 and dp/dx < 0 (d) The boundary layer thickness is zero...

need asap thank you Lowering the viscosity of polymer in processing a batch of polycarbonate at 170°C to make a certain part, it is found that the polycarbonate's viscosity is twice that desired. Tg = 150 °C for polycarbonate. Determine the Temperature at which this polymer should be pr...

Problem 4 (25 points) An overhang beam with negligible weight is loaded as shown. Knowing that the flexural rigidity of the beam is El = 100 x 106 Nm?, (a) derive the elastic curve for section AB of the beam and (b) determine the slope at supports A and B. 10 KN 5 kN/m А) M = 40 kN-m B. 4 m - ...

Question z a) What is the physical interpretation of the wet-bulb temperature? b) During winter time a room is maintained at a steady temperature and humidity by an air-conditioning system shown. 200 m3/min of room return air at 30°C, 50% relative humidity is first mixed with 40 m3/min of outdoo...

The weight of a diesel engine is directly proportional to the compression ratio (W=kr) because extra metal must be used to strengthen the engine for the higher pressures. Examine the net specific work produced by a diesel engine per unit of weight as the pressure ratio is varied and the specific hea...

A space Probe lands on distant plaset. A pendulum with length L=18 in is set up and Ocillates with a period of T= 2sec. Calculate the gravitional constant and compare to earth gravity Vibration dunimes...

Martensite is on the TTT diagram but is not on the phase diagram of steel. How do you explain the formation of martensite in steel?...

Question 3: (10 marks) Figure below shows a collision between three balls of clay. The three hit simultaneously and stick together A. What are the speed and direction of the resulting blob of clay? (7 marks) B. What is the energy lost during this collision? (3 marks) 40 g 3.0 m/s 30 g 2.0 m/s 20 g P...

Use the graphical method to construct the shear-force and bending-moment diagrams for the beam shown. Let a=4.0 ft, b=9.0 ft, c=5.0 ft, d=4.0 ft, w = 8 kips/ft and P = 75 kips. Construct the shear-force and bending-moment diagrams on paper and use the results to answer the questions in the subsequen...

The Randomness as in a seed values of the thermal conductivity of the material is treated normal Random variable with mean 29.567 w/mk derivation of 1.504 wlime) is the probability of thermal conductivity having as value between 28 W/(mK) and 29 w/ link)? and standard (a) what what value of thermal ...