Answer:
3A
Explanation:
Using Ohms law U=I×R solve for I by I=U/R
A diagram showing a use case diagrams for these requirements is given in the image attached.
<h3>What is system
Case diagram?</h3>
A use case diagram is known to be a kind of graphical illustration of a users in terms of their various possible association or interactions within any given system.
A use case diagram in banking can be used to prepare, depict and also to know all the functional requirements of the banking system.
Therefore, Give the use case specification for the banking system services and paying a bill online is given in the image attached.
Learn more about Case diagram from
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Answer:
d. All of the above would require an EIS.
Explanation:
A document prepared with the aim of describing the impacts of suggested operations on the environment is an Environmental Impact Statement (EIS). There was a mistake. An Environmental Impact Statement (EIS) is therefore a report describing the environmental effects resulting from a current action. All of the activities above would have an effect on the environment and therefore must fill an EIS
Answer:
7.7 kN
Explanation:
The capacity of a material having a crack to withstand fracture is referred to as fracture toughness.
It can be expressed by using the formula:
![K = \sigma Y \sqrt{\pi a}](https://tex.z-dn.net/?f=K%20%3D%20%5Csigma%20Y%20%5Csqrt%7B%5Cpi%20a%7D)
where;
fracture toughness K = 137 MPa![m^{1/2}](https://tex.z-dn.net/?f=m%5E%7B1%2F2%7D)
geometry factor Y = 1
applied stress
= ???
crack length a = 2mm = 0.002
∴
![137 =\sigma \times 1 \sqrt{ \pi \times 0.002 }](https://tex.z-dn.net/?f=137%20%3D%5Csigma%20%5Ctimes%201%20%20%5Csqrt%7B%20%5Cpi%20%5Ctimes%200.002%20%7D)
![137 =\sigma \times 0.07926](https://tex.z-dn.net/?f=137%20%3D%5Csigma%20%5Ctimes%200.07926)
![\dfrac{137}{0.07926} =\sigma](https://tex.z-dn.net/?f=%5Cdfrac%7B137%7D%7B0.07926%7D%20%3D%5Csigma)
![\sigma = 1728.489 MPa](https://tex.z-dn.net/?f=%5Csigma%20%3D%201728.489%20MPa)
Now, the tensile impact obtained is:
![\sigma = \dfrac{P}{A}](https://tex.z-dn.net/?f=%5Csigma%20%3D%20%5Cdfrac%7BP%7D%7BA%7D)
P = A × σ
P = 1728.289 × 4.5
P = 7777.30 N
P = 7.7 kN