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Rus_ich [418]
4 years ago
8

Fluid fills the space between two parallel plates. The differential equation that describes instantaneous fluid velocity for uns

teady flow with the fluid moving parallel to the walls is
rho. ζu/ζx = μ. ζ^2 u/ζy^2

The lower plate is stationary and the upper plate oscillates in the x-direction with a frequency ω and an amplitude in the plate velocity of U. Use the characteristic dimensions to normalize the differential equation and obtain the dimensionless groups that characterize the flow.

Engineering
1 answer:
USPshnik [31]4 years ago
3 0

Answer:

u/v = S (y²w) / m sinwt + y/h

Explanation:

see attached image

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Determine linear atomic density along [001] direction of a FCC unit cell with lattice constant a (cube edge length).
SIZIF [17.4K]

Answer:

LD=\dfrac{0.5}{ a}

Explanation:

Given that

Unit cell is in FCC

Here given direction is not clear visible so we take direction [001].

We know that linear density(LD) given as

LD=\dfrac{Number\ of\ atoms\ in\ the\ direction\ vector}{d_{[001]}}

So the number of atom will be 1/2 in direction  [001]

In FCC

a=2\sqrt2 \ r

LD=\dfrac{0.5}{ a}

LD=\dfrac{1}{2\sqrt2 \ r}

6 0
3 years ago
Discuss why TVET Institutions need advice of the business community in order
Aliun [14]

Answer:

Without the indispensable advice of the business community, TVET Institutions will be unable to cover the gap in career knowledge required by the business community.  To develop workers who possess the knowledge and skills required by today's business entities, there is always the continual need for the educational institutions (gown) to regularly meet the business community (town).  This meeting provides the necessary ground for the institutions to develop programs that groom the workforce with skills that are needed in the current workplace.  Educational institutions that do not seek this important advice from the business community risk developing workers with outdated skills.

Explanation:

TVET Institutions mean Technical and Vocational Education and Training Institutions.  They play an important role in equipping young people to enter the world of work.  They also continue to develop programs that will improve the employability of workers throughout their careers.  They regularly respond to the changing labor market needs, adopt new training strategies and technologies, and expand the outreach of their training to current workers while grooming the young people for work.

4 0
3 years ago
A certain power-supply filter produces an output with a ripple of 100 mV peak-to-peak and a dc value of 20 V. The ripple factor
Oksanka [162]

Answer: the ripple factor is 0.005

Explanation:

Given the data in the question;

we know that expression of ripple factor is;

r = Vr(pp) / Vdc

where Vr(pp) the peak to peak is ripple voltage ( 100mv = 0.1 V)

and Vdc is the dc value of the filter output voltage ( 20 V)

so we substitute our given values;

r = 0.1 / 20

r = 0.005

Therefore; the ripple factor is 0.005

8 0
3 years ago
Ruler game, HELPPPPP
viktelen [127]
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3 0
3 years ago
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You want to determine whether the race of the defendant has an impact on jury verdicts. You assign participants to watch a trial
Andru [333]

Answer:

The confidence scale represents an ordinal scale of measurement

Explanation:

An ordinal scale or level of measurement is used to measure attributes that can be ranked or ordered, but the interval between the attributes do not have quantitative significance. In this case, the measurement was done on a scale of 1 - 7, with a "1" being; not all that race of defendant has an impact on jury verdicts and a "7" being "very" meaning that race indeed has impact on jury verdicts. Another example can be a survey carried out on the level of customer satisfaction on a particular product, with "1" most dissatisfied and "10 " representing most satisfied. In the first example, it is wrong to say that the difference between 1 being "not at all" and maybe 3 is the same as the difference between 5 and 7 which have different connotations, because the numbers are merely for tagging and not to quantify.

Other levels of measurement include:

1. Nominal: this is the simplest level of measurement and it is simply used to categorize the attributes. Example is taking a survey on gender in the categories of male, female and transgender.

2. Interval: the interval scale is used when the distance between two attributes have meanings but there is no true zero value associated with the scale.

3. Ratio: this combines all the other three levels of measurement and is used to categorize, used to show ranking, has meaningful distances between the attributes and the scale has a true zero point. Example is the measurement of temperature using the celcius scale thermometer, where there is a true zero point at 0°C and the distance between 5°C and 10°C is the same as the distance between 10°C and 15°C.

6 0
4 years ago
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