Calculate the Cunningham correction factor for a particle with a 0.03-micron diameter in air at 1 atm pressure and 150 oC.
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Calculate the Cunningham correction factor for a particle with a 0.03-micron diameter in air at 1 atm pressure and 150 oC.
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- A contractor claims that the mean compressive strength for a concrete mix is 5,000 psi and that it has a standard deviation of 400 psi. If you break 20 cylinders and obtain a mean compressive strength of 4,800 psi, would you believe the contractor’s claim? Why? (Hint: Use statistical t-test.)Calculate the R-value for the following materials: a. 4 in. thick brick b. 10 cm thick brick c. 12 in. thick concrete slab d. 20 cm thick concrete slab e. 1 cm thick human fat layerRound off to 3 significant figures, and the tolerance is ±1 in the 3rd significant digit. Thank you.
- Determine plasticity index if liquid limit is 40% and plastic limit is 30%Question 3: The block shown is made of a magnesium alloy for which E=760GPa and 9 =0.35. Knowing that o=157 MPa, determine (a) the magnitude of o, for which the change in the height of the block will be zero, (b) the corresponding change in the area of the face ABCD, (c) the corresponding change in the volume of the block.6- A liquid has a specific weight of 59 lb/ft and a dynamic viscosity of 2.75 lb . s/ft'. Determine its kinematic viscosity.
- During the design of a building the deflection of a beam is calculated to be 0.90 inch. In order to limit the maximum deflection of the beam to 0.75 inch, how should the design be changed? A. Substitute a beam having a plastic modulus 20 percent greater B. Substitute a beam having a moment of inertia 20 percent greater C. Substitute a beam having a moment of inertia 15 percent greater D. Substitute a beam having a yield point 20 percent greaterPROBLEM 3. The assembly shown constructed from a steel bolt with a diameter of 8 mm and fits and a magnesium sleeve with an inner diameter of 10 mm and an outer diameter of 12 mm. The length of the sleeve is 150 mm. The assembly is originally at a temperature of T1 temperature is raised to a final value of T2 = 120°C. If there is gap of 0.1 mm between sleeve and the rigid washer at end B before the heating, determine the average normal stress in the bolt and the = 20°C and then the sleeve. Est = 200 GPa, Emg = 44.7 GPa, a,t = 14(10°)/°C, amg = 26(10)/"C. Rigid washers 150 mm 0,1 mm6-39 The following data were collected from a 10.16 mm-diameter test specimen of polyvinyl chloride (lo = 50.8 mm): Load (kN) Al (mm) 0.00000 1.334 0.1895 2.668 0.38 4.003 0.603 5.34 0.813 6.67 1.168 7.38 1.778 (maximum load) 7.12 2.388 6.316 3.048 (fracture) After fracture, the total length was 53.086 mm and the diameter was 9.982 mm. Plot the engineering stress strain curve and calculate (a) the 0.2% offset yield strength; (b) the tensile strength; (c) the modulus of elasticity; (d) the % elongation; (e) the % reduction in area; (f) the engineering stress at fracture; and (g) the modulus of resilience.
- A fluid's viscosity and unit weight are reduced to 60% and 80%, due to increase in temperature. If other things remain constant, then the change in coefficient of permeability will be vgrign retiscA circular nylon [E = 8 GPa; ν = 0.35; α = 29 ×10-6/°C] disk with a circular hole in its center is shown. At an initial temperature of Ti = 22°C, the outer diameter of the disk is D = 210 mm, the diameter of the central hole is d = 55 mm, and the thickness of the disk is t = 24 mm. At a final temperature of Tf = 46°C, determine:(a) the change in diameter Δd of the central hole (assume an increase Δd as positive, otherwise as negative).(b) the change in thickness Δt of the disk (assume an increase Δt as positive, otherwise as negative).(c) the normal strain in the circumferential direction around the outside of the disk.The minimum safe bending radius of a certain polyethylene tube is theoutside diameter times 31⁄2. The tube has an outside diameter of 3⁄8 inch.What is the minimum bending radius?