Answer : 9.36ohms/ temperature
Explanation:
Expression for the variation of resistance of platinum with temperature
Rt= Ro(1+*t)
Rt= resistance @ t°C
Ro= resistance @ 0°C
*= temperature coefficient of resistance
Calculate the change in resistance by putting 120ohms for Ro,
0.0039/K for *
20°C for t
Using this formula:
Rt = Ro(1+*t)
Rt- Ro = Ro*t
= (120ohms)(0.0039/K)(20°C)
= 9.36ohms/K
Answer: 0.93 mA
Explanation:
In order to calculate the current passing through the water layer, as we have the potential difference between the ends of the string as a given, assuming that we can apply Ohm’s law, we need to calculate the resistance of the water layer.
We can express the resistance as follows:
R = ρ.L/A
In order to calculate the area A, we can assume that the string is a cylinder with a circular cross-section, so the Area of the water layer can be written as follows:
A= π(r22 – r12) = π( (0.0025)2-(0.002)2 ) m2 = 7.07 . 10-6 m2
Replacing by the values, we get R as follows:
R = 1.4 1010 Ω
Applying Ohm’s Law, and solving for the current I:
I = V/R = 130 106 V / 1.4 1010 Ω = 0.93 mA
Answer:
a) civil engineering.
Explanation:
Civil engineering is a professional engineering program that deals with the construction, design, and maintenance of all the natural and man-made environments including dams, buildings, railways, and roads.
Civil engineering is the branch of engineering that is the practice not restricted because civil engineer is not restricted to academic profession but practice in designing and construction can make someone a professional civil engineer.
Hence, the correct answer is "a)."
Answer:
interpersonal.
Explanation:
Out of all the activities performed by Michelle, three activities involves the interpersonal skills.
1. Meeting with city officials
2. Meeting with section managers
3. Handling the complaint filed by an employee
All these activities involves interpersonal skills. Hence, we can say that she had spent her most of the day by using the interpersonal skills.
Answer:
1. Costs and frequency of change.
2. The most important ‘non-functional’ requirements. Different systems have different priorities for non-functional requirements.
3. The software lifetime and delivery schedule.
Explanation:
The process of requirement gathering is required in both generic and customized software.
• A document to define the development process is required in all type of software application.
• Updating is required in each type of software. For doing so, new version of each type of software is released.
• Maintenance is an important part of software development. It is required in each type of application development.
• Software has some minimum requirements to execute. So, platform dependability is considered in all software development.
