Engineering - October 2007

CFD has been used to conduct heat transfer studies on microfluids. Can this be extended to nanofluids???

2007-10-31 01:28:45 · 1 answers · asked by Anonymous

2007-10-30 23:12:10 · 4 answers · asked by Jimmy 1

2007-10-30 22:23:59 · 2 answers · asked by mahesh s 1

2007-10-30 21:55:51 · 4 answers · asked by daudzai 2

2007-10-30 21:40:34 · 2 answers · asked by Ashfaq K 1

2007-10-30 19:38:13 · 1 answers · asked by saibalengineering 1

Can transformer be used to change direct current e.m.f? If not , why?

2007-10-30 17:26:04 · 4 answers · asked by Anonymous

Consider two boxes being pulled by a cord across a floor with friction. The lower box has mass m₂ and a co-efficient of kinetic friction μ(k) with the floor. The upper box has mass m₁ and a co-efficient of static friction μ(s) with the lower box. The cord makes an angle Ѳ with the horizontal. Assume that the angle is small enough that m₂ remains in contact with the floor.



1) What is the maximum acceleration such that the little box does not move with respect to the big box
2) Find the tension in the rope in terms of m₁, m₂, μ(k), μ(s), and for this max acceleration
3) Evaluate the tension in the rope at the max acceleration when m₁= 1kg , m₂= 1.5kg , μ(k)= 0.25, μ(s)=0.6 and Ѳ=15

2007-10-30 17:04:18 · 3 answers · asked by basil 1

For Example, In production, we take Ist operation production is 25000 pcs, rejection is 1000 pcs, so we get 24000 pcs for second operation, in sec operation if rejection is 2450, after that another two more operations if have rejections. How we calculate the overall percentage of rejections?

2007-10-30 17:04:16 · 3 answers · asked by peri 1

you are designing a decorative lamp to hang in an express elevator. The lamp has three sections that hang one directly bellow the other, connected by thin wires.The lamp is also attached to the ceiling by a single thin wire. Each section of the lamp weighs 5 N . determine the max tension of each wire if the elevator comes to an emergence stop from a speed of 5m/s over a distance of 3.8 m.

2007-10-30 17:02:56 · 3 answers · asked by basil 1

Hey iam working in manufacturing company as a asst mang in maintenance and my work experience is one and half years . MY intrest is on VLSI Design, If i move to Vlsi design my work experience will not add if i move to oracle my work experience add and fetch more CTC. Is oracle best or VLSI design best for me

2007-10-30 16:14:45 · 1 answers · asked by sai 1

iam in the state of virginia

2007-10-30 16:10:19 · 4 answers · asked by michaeljustussvcc 1

2007-10-30 15:51:39 · 8 answers · asked by Anonymous

There was a test, I had to put my hands on two metal plates, the flowing current was displayed in Microamperes.
I scored 15, my friend was more than 50.
How does it work, and is there some meaningful information in that anyway?

2007-10-30 15:12:14 · 1 answers · asked by Anonymous

2007-10-30 15:08:53 · 2 answers · asked by A learner 1

I needed help figuring out the following problem. all help is greatly appreciated :)

The velocity of the transverse waves produced by an earthquake is 8.9 km/s, and that of the longitudinal waves is 5.1 km/s. A seismograph records the arrival of the transverse waves 68 s before the arrival of the longitudinal waves. How far away is the earthquake?

2007-10-30 13:42:53 · 2 answers · asked by Anonymous

2007-10-30 12:42:41 · 3 answers · asked by Anonymous

2007-10-30 12:08:04 · 10 answers · asked by Anonymous

I have an object. I know the equation is a= Dv/Dt. My times are 2.8s and 4.0s. My velocities are 1.43 and 1.45. 10 points for giving the most thorough answer.

Also, show me how you did it please.

2007-10-30 11:33:15 · 3 answers · asked by Anonymous

2007-10-30 11:01:14 · 3 answers · asked by chief 1

Consider three identical resistors, R. The maximum power each can dissipate is P. Two of the three resistors are connected in series, and the third is connected in parallel with the other two. What is the maximum power this network dissipate?

2007-10-30 09:44:34 · 5 answers · asked by littlet9393 1

A trough is 14 ft long and its ends have the shape of isosceles triangles that are 3 ft across at the top and have a height of 1 ft. If the trough is being filled with water at a rate of 12 ft3/min, how fast is the water level rising when the water is 5/12 ft deep?

Note: rate is 12 feet cubed! (for clarification)

2007-10-30 09:38:00 · 1 answers · asked by bosankasam 2

need to make my appliance work here without blowing it up?

2007-10-30 09:11:40 · 10 answers · asked by poo 2

What is comprehensive theory of communication difination

2007-10-30 08:35:58 · 1 answers · asked by somaya 1

2007-10-30 08:07:49 · 2 answers · asked by shameem s 1

I may be deciding to do them at university.

2007-10-30 06:55:00 · 5 answers · asked by Anonymous

I may be deciding to do them at university.

2007-10-30 06:52:52 · 2 answers · asked by Anonymous

See Step 11 on this company's device --- http://www.fluidmaster.com/pdf/400a_instructions.pdf

They are sending water down the over-flow pipe which is water lost down the drain for NO GOOD REASON AT ALL. My neighbor has defied this instruction and directed the water to fill inside the tank instead and there is no ill-effect. The re-directed water filled up the tank faster. Why would a commercial company ask their customer to waste water ? There must be a good reason ... Anybody knows why ?

2007-10-30 06:50:11 · 4 answers · asked by Anonymous

2007-10-30 06:27:06 · 8 answers · asked by Anonymous

Ellingham diagram is a plot of change in STANDARD free energy change
with temperature for various reactions like the formation of
oxide,sulphides etc.
STANDARD FREE ENERGE CHANGE is the change in energy measured at
S.T.P.Hence its a constant.
My question is how can it be compared at different temperatures as done in ellingham diagrams??
A constant cannot be varied with any variable...

2007-10-30 06:25:15 · 1 answers · asked by shridhar m 1