13.0 (20 pts)    An electroplating process will be used to coat the exterior surface of a 160 mm diameter x 1.5 meter long cylinder with silver. Determine the time in minutes to electroplate silver to a thickness of 0.06 mm if the plating current is 15 amps.

A W8 3 31 rolled-steel shape is used for a column of 21-ft effective
length. Using allowable stress design, determine the allowable
centric load if the yield strength of the grade of steel used is
(a) sigma Y = 36 ksi
(b) sigma Y = 50 ksi.

Use E = 29 * 10 ^6 Psi

Using the Faraday equation. What current and time are needed to plate a 1 mm thick layer of copper onto an object with a surface area of 0.1m2 ? The density of copper is 8940 kg/m3 , its atomic weight is M = 63.5 kg/kmol and copper ions have a valence of z = 2.

two large aluminum plates (k =240W/m.K) each 1cm thick with 10micrometer surface roughness are placed in contact under a pressure of 1bar in air (k=0.026W/m.K). The temperature at the inside and outside surfaces is 400 degrees Celsius and 150degrees Celsius. Calculate the heat Flux and the temperature drop due to contact resistance.

What are the synthesis methods for carbon nanotubes? What is the general growth mechanism for CNTs? List at least 2 potential applications for CNTs. What are the synthesis methods for silicon nanowires? List at least 2 potential applications for SiNWs.

In a heat treatment of a specific excavator bucket tooth of 15kg mass, the tooth is heated to 885⁰C and to achieve the required level of physical properties it needs to be cooled to the final temperature in a cooling tank using brine as the cooling medium. Determine the final temperature if the minimum required mass of brine initially at 20⁰C temperature is 260 kg, using specific heat values c_b= 3.71 J/g·K and c_s=0.47 J/g·K for brine and steel respectively. Assume no heat losses to the environment.

Advantages, disadvantages and typical applications for the Acoustic Emission Testing.

what is the impact that the technology did?

the technology is the auto focus cameras on the phone or cameras which is a mechatronics system

(can you type it please it is hard to read the handwriting )

Fluid enters a tube with a flow rate of 0.021 kg/s and an inlet temperature of 20°C. The tube, which has a length of 6.280 m and diameter of 15 mm, has a surface temperature of 30°C. Determine the heat transfer rate to the fluid if it is water. The heat transfer rate to the fluid, in W is?

explain the design , construction and working of a parallel and counter flow shell and tube types of heat echangers? also draw figures

The Acme Widget Company has generally followed a relative conservative business model and has done well. Their sales have been relatively stable over the past decade and represent about 40% of the powered widget market, with widgets operating on conventional fossil fuels – gasoline, diesel, and propane. One of the founders of the company recently passed on his voting stock to his son, who advocates moving the company in a new direction. He wants the company to pursue a new business opportunity with the design and manufacture of widgets that employ alternative energy sources. You have been hired as a consulting engineer by the company to help them decide if they should go forward. While you know next to nothing about powered widgets, they believe you can help them perform an objective RWW analysis.  

Describe in some detail how you would go about leading this analysis: what questions would you have for the company personnel, what other sources of data might you want to use and what information would you attempt to gather from these sources? Incorporate as many of the tools we have explored this semester as you feel apply. For example: Is the Design for X Spiderweb graphic relevant for this analysis? What role might forecasting techniques play? How important is it to be able to quantify various factors at each stage of the analysis?

Discuss how turbulence influence the heat transfer process in convection pipe flow

Discuss the meaning/importance in 2-3 sentences per term (directly copying verbatim answers from thesaurus will carry NO points)

(1) Beach or clamshell marks; (2) Chevron pattern; (3) Creep; (4) Endurance limit; (5) Factor of safety; (6) Fatigue life; (7) Fatigue strength; (8) Fracture mechanics; (9) Fracture toughness; (10) Griffith law; (11) Notch sensitivity; (12) S-N curve; (13) Shot peening; (14) Toughness; (15) Weibull distribution; (16) Weibull modulus.

make sure to type it not hand written.

Write a literature review on

• the catastrophic effect of failure and fatigue on structure

Dont just copy paste from net please