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Svetllana [295]
2 years ago
10

In air, a sound wave with a frequency of 196 hz has a wavelength of about 1.76 meters. what is the wavelength of a wave if the f

requency is increased to 784 hz?
SAT
1 answer:
Aloiza [94]2 years ago
3 0

The wavelength of the sound wave if the frequency is increased to the given value is 0.44m.

Given the data in the question;

  • Frequency of sound wave a; f_a = 196Hz = 196s^{-1}
  • Wavelength of sound wave a; \lambda _a = 1.76m

Speed of sound wave; v =\ ?

  • Frequency of sound wave b; f_b = 784Hz = 784s^{-1}

Wavelength of sound wave b; \lambda _b = ?

<h3>Wavelength</h3>

Wavelength is simply the distance over which the shapes of waves are repeated. It is the spatial period of a periodic wave.

It is expressed as;

\lambda = \frac{v}{f}

Where v is velocity and f is frequency.

First, we calculate the velocity of the sound wave in air from sound wave a.

\lambda = \frac{v}{f}\\ \\1.76m= \frac{v}{196s^{-1}}\\\\v = 1.76m * 196s^{-1}\\\\v = 344.96m/s

Now, we determine the wavelength of sound wave b using the velocity of sound wave in air calculated above.

\lambda = \frac{v}{f}\\ \\\lambda = \frac{344.96m/s}{784s^{-1}}\\\\\lambda = 0.44m

Therefore, the wavelength of the sound wave if the frequency is increased to the given value is 0.44m.

Learn more about wavelength: brainly.com/question/27120701

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Answer:

B

Explanation:

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3 years ago
Which statement best describes this political communication? it is free of political bias. It does not use symbolism. It is an e
Alex787 [66]

The statement that best describes this political communication is : It is an example of propaganda.

<h3>What is political communication?</h3>

Political communication are information shared through various media, which have political context. They are connection concerning politics and citizens and the interaction modes that connect these groups to each other.

Political communication is important because it is a combination of different social sciences field which include political science and  psychology science.

Hence, the statement that best describes this political communication is that It is an example of propaganda.

Learn more about political communication here: brainly.com/question/385201

6 0
2 years ago
6. List four strategies you should follow while taking a standardized test. (4
worty [1.4K]

Answer:

There's no hard and fast rule, but this is a general list of things you could do, based off of my years of taking standardized tests.

1. Check the number of questions and the type of questions.

2. Allocate certain timeframes to finish each type of question, and ensure that you stick to it. Leave at least 15 minutes to check your work, especially if the paper is more than one hour.

3. Really read the information behind a question BEFORE you attempt it.

4. Answer the easiest questions first.

Explanation:

1. Check the number of questions and the type of questions.

You might be wondering why you should bother to do this step. Not only does it help you have a better idea of the timeframe to allocate to each question, it also just gives you a breeze through of what you'll be dealing with for the next hour or few hours.

2. Allocate certain timeframes to finish each type of question, and ensure that you stick to it. Leave at least 15 minutes to check your work, especially if the paper is more than one hour.

So how do you allocate time? Generally, the rule of thumb is to divide the number of questions by the time you have. However, don't do this.

Firstly, subtract the time you want to leave for checking from the time limit.

For Multiple Choice Questions (really depends on the time limit), you might want to generally give yourself 3 minutes to answer each question.

Short-answer questions, perhaps 5 - 7 minutes.

Long-answer questions, 10 - 20 minutes.

3. Really read the information behind a question BEFORE you attempt it.

This sounds obvious, but you'd be surprised how many people get questions wrong just because they didn't read the question properly.

4. Answer the easiest questions first.

Some people think you should allocate all your time to the difficult questions because you can just do the easy ones later right? No. Do the easy ones first. Make sure you have those marks and don't leave it to chance. If a question is too hard, forget it, mark the question number down somewhere and move on to ones you know you can answer.

5 0
3 years ago
Choose the best Spanish word to complete the sentence. Alan y Enrique __________ amigos. Es están son está.
expeople1 [14]

Answer:

Son

Explanation:

Just got 100%, but further explanation: Es and esta are both easy to rule out, as neither of them refers to "they" (Alan y Enrique), and estan does not work because of the weird rules. Tbh I feel like you just have to memorize them except in some cases where one just clearly makes more sense than the other.

8 0
3 years ago
How does cultural differences influence communication​
Anni [7]

Explanation:

Cultural differences causes behavior and personality differences like body language, thinking, communication, manners, norms, etc. which leads to miscommunication. ... Roles are defined by culture. Good communication only occurs between people with different cultures if both accept their differences with open mind.

3 0
3 years ago
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