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m_a_m_a [10]
3 years ago
7

8. Consider laminar viscous flow over a flat plate. We will earn later in the course that the skin friction coefficient Cf is gi

ven by Cf = 0.664 / (Rex)0.5 where Rex is the Reynold number based on the distance from the leading edge of the flat plate x, and is defined as Rex = [infinity]U[infinity]x/[infinity] . Here [infinity] is freestream density, U[infinity] is the freestream velocity, and [infinity] is the molecular viscosity. a) Integrate Cf over the non-dimensional
Engineering
1 answer:
Allisa [31]3 years ago
8 0
Idk I’m looking for answers too
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A commercial facility has a three-phase, 277 volt, 1200 Amp service. What is the required nominal transformer size needed for th
alekssr [168]

Answer:

The answer is "Option e".

Explanation:

Given value:

\to v_{ph}=277  \ \ \ \ \ \ \  I_{ph} =1200\\\\

vA= v_{Ph} I_{ph}  \  \ \ \to  for \ single \ phase\\\\=3v_{ph} I_{ph}  \ \ \ \ \ \to  for \ 3 - \phi  \\\\s = 3\times 277 \times 1200 \\\\

  =997.200 \ K VA\\\\= 1000 \ k VA

7 0
3 years ago
Determine whether w is in the span of the given vectors v1; v2; : : : vn
Brrunno [24]

Determine whether w is in the span of the given vectors v1; v2; : : : vn

. If your answer is yes, write w as a linear combination of the vectors v1; v2; : : : vn and  enter the coefficients as entries of the matrix as instructed is given below

Explanation:

1.Vector to be in the span means means that it contain every element of said vector space it spans. So if a set of vectors A spans the vector space B, you can use linear combinations of the vectors in A to generate any vector in B because every vector in B is within the span of the vectors in A.

2.And thus v3 is in Span{v1, v2}. On the other hand, IF all solutions have c3 = 0, then for the same reason we may never write v3 as a sum of v1, v2 with weights. Thus, v3 is NOT in Span{v1, v2}.

3.In the theory of vector spaces, a set of vectors is said to be linearly dependent if at least one of the vectors in the set can be defined as a linear combination of the others; if no vector in the set can be written in this way, then the vectors are said to be linearly independent.

4.Given a set of vectors, you can determine if they are linearly independent by writing the vectors as the columns of the matrix A, and solving Ax = 0. If there are any non-zero solutions, then the vectors are linearly dependent. If the only solution is x = 0, then they are linearly independent.

7 0
3 years ago
Name two parts that are sometimes made of hard metal and pressed into the head​
gayaneshka [121]

Answer:copper , stainless steal

Wrought iron

Explanation:

6 0
3 years ago
Why is there a need for soil engineering?
Anvisha [2.4K]

Answer:

Soil engineering helps in analyzing the structure and composition of the soil of the proposed construction site, thus helping in deciding whether the soil of the proposed construction site or building is worth exploiting.

6 0
2 years ago
When developing a design proposal, you will need to ask: *
Liula [17]

Answer:

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6 0
3 years ago
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