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Vsevolod [243]
3 years ago
6

The speed of an aircraft is given to be 260 m/s in air. If the speed of sound at that location is 330 m/s, the flight of the air

craft is _____.
Engineering
1 answer:
navik [9.2K]3 years ago
8 0

Answer:

Ma=\frac{260}{330} \\Ma=0.7878

So, Ma < 1  Flow is Subsonic

Explanation:

Mach Number:

Mach Number is the ratio of speed of the object to the speed of the sound. It is used to categorize the speed of the object on the basis of mach number as sonic, supersonic and hyper sonic. (It is a unit less quantity)

Mach < 1       Subsonic

Mach > 1       Supersonic

Ma= Speed of the object/Speed of the sound

Ma=\frac{260}{330} \\Ma=0.7878

So, Ma < 1 Flow is Subsonic

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Given frequency, what is the formula for the period of a wave?
Veronika [31]

Answer:

f = c / λ = wave speed c (m/s) / wavelength λ (m). The formula for time is: T (period) = 1 / f (frequency). λ = c / f = wave speed c (m/s) / frequency f (Hz). The unit hertz (Hz) was once called cps = cycles per second.

Explanation:

7 0
2 years ago
Given resistance 30ohms Inductance 200mH is connected to a 230v,50hZ supply. Impedance 69.6ohms Calculate current consumed?
Kisachek [45]

Answer:

the current consumed is 3.3 A

Explanation:

Given;

resistance, R = 30 ohms

inductance, L = 200 mH

Voltage supply, V = 230 V

frequency of the coil, f = 50 Hz

impedance, Z = 69.6 Ohms

The current consumed is calculated as;

I = \frac{V}{Z} \\\\I = \frac{230}{69.6} \\\\I = 3.3 \ A

Therefore, the current consumed is 3.3 A

4 0
2 years ago
In the case, the software engineers present at the meeting would concern themselves with ________-level strategy
jekas [21]

The level of strategy which the software engineers would concern themselves with would be highly dependent on the nature of the case or situation.

<h3>What is a strategy?</h3>

A strategy can be defined as a set of guiding principles, procedures, actions, and decisions that a business organization or an individual combines, in order to achieve its aim, objectives and goals.

Basically, developing a strategy is essential because it helps to attract new customers and gives a competitive advantage over rivals in the industry.

<h3>The types of strategy.</h3>

In Software engineering, there are different types of strategy used by software engineers and these include:

  • Tactical strategy
  • Product management strategy
  • Lifecycle process strategy
  • Technology strategy
  • Support strategy
  • Customer strategy

Furthermore, there are three (3) main <u>levels</u> of strategy in software engineering and these are:

  1. Business-level strategy
  2. Functional-level strategy
  3. Corporate-level strategy

In this scenario, the level of strategy which the software engineers present at the meeting would concern themselves with would be highly dependent on the nature of the case or situation.

Read more on strategy here: brainly.com/question/26064163

6 0
2 years ago
Microchips found inside most electronic devices today are examples of what material A. Polymers B. Alloys C. Composites D. None
dedylja [7]

Answer: A

Explanation:

Microchips are made out of silicone witch is a polymer.

6 0
3 years ago
Read 2 more answers
Write a statement that assigns freeBooks the appropriate value based on the values of the boolean variable isPremiumCustomer and
solniwko [45]

Write a statement that assigns freeBooks the appropriate value based on the values of the boolean variable isPremiumCustomer and the int variable nbooksPurchased is described below

Explanation:

Online Book Merchants offers premium customers 1 free book with every purchase of 5 or more books and offers 2 free books with every purchase of 8 or more books. It offers regular customers 1 free book with every purchase of 7 or more books, and offers 2 free books with every purchase of 12 or more books.

A statement that assigns freeBooks the appropriate value based on the values of the boolean variable isPremiumCustomer and the int variable nbooksPurchased. Here's what we have:

if(isPremiumCustomer = true){

   if(nbooksPurchased >= 5));

        freeBooks = 1;  

   }else if(nbooksPurchased >= 8){

  freeBooks = 2;

}else {

if(nbooksPurchased >= 7);

  freeBooks = 1;

}else if(nbooksPurchased >= 12){

 freeBooks = 2;

}

We are getting an error of "illegal start of expression".

Two of the hints are "You are using an incorrect number somewhere in your solution" and "We think you might want to consider using: ==".

I do not want the answer, I just want pointed in the right direction.

4 0
3 years ago
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