42. The number of decibels, d, produced by an audio

source can be modeled by the equation d = 10 log(K),

where I is the sound intensity of the audio source and

K is a constant. How many decibels are produced by an

audio source whose sound intensity is 1,000 times the

value of K?

F. 4

G. 30

H. 40

J. 100

K. 10,000

Answers

Answer 1

We are given that d = 10 log(K) where K is a constant and the sound intensity is 1000 times the value of K.

So, we can write I = 1000K

Substituting this value in the equation for d, we get:

d = 10 log(1000K)

d = 10 (log 1000 + log K)

d = 10 (3 + log K)

d = 30 + 10 log K

Since K is a constant, we can assume it to be 1.

Therefore, d = 30 + 10 log 1 = 30

So, an audio source whose sound intensity is 1000 times the value of K produces 30 decibels of sound.

Therefore, the answer is option G) 30.

Related Questions

Budget hack replace netflix and other pricey subscriptions with these free versions

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QUESTION 1
Tim, a grade 9 learner refuses to do his homework. He believes nothing he does will
make any difference, and he sees himself as doomed to fail in school. He enjoys being in
nature, and not in the classroom. He battles to focus his attention on the here and now.

1. 1 How can you, as a teacher, enhance his self-esteem?

Answers

As a teacher, you can enhance Tim's self-esteem by:

Providing positive feedback and praise for his strengths and achievements
Encouraging him to set achievable goals and acknowledging his progress towards those goals
Creating a safe and supportive classroom environment where he feels respected and valued
Offering him opportunities to explore his interests and strengths, such as incorporating nature into classroom activities
Providing him with specific and constructive feedback on how to improve in areas where he struggles, instead of simply criticizing him for his shortcomings.
It's also important to understand and address any underlying issues that may be contributing to Tim's low self-esteem and lack of motivation, such as learning difficulties, anxiety, or other mental health concerns.

Section 1/ How does the author achieve this purpose? What is the author's purpose in the first section of the article? "Changes in the Kingdom" (Upfront PP 8-1) Review the sidebar on page 10. What does it add to your understanding of the section "A Powerful Nation"? How have the reforms introduced by Prince Mohammed affected women in Saudi Arabia? In the section " A More Normal Life" how does the author support the claim that the social changes are welcomed by Saudi youth? What does Ottaway mean when he says that Prince Mohammed “Is tr- to put these ultraconservatives clerics back in their box," ? Based on the article, what is the monarchy doing to hold on to its ne absolute authority over the people of Saudi Arabia?

Answers

The author's purpose in the first section of the article is to introduce the changes that have been taking place in Saudi Arabia under the leadership of Crown Prince Mohammed bin Salman.

Describe Monarchy?

A monarchy is a form of government in which a single ruler, usually a king or queen, holds supreme power over the state. In a monarchy, the ruler is typically born into a royal family and inherits their position through hereditary succession. Monarchies can be either absolute or constitutional.

The author's purpose in the first section of the article is to introduce the changes that have been taking place in Saudi Arabia under the leadership of Crown Prince Mohammed bin Salman. The author discusses how Prince Mohammed has introduced a number of social and economic reforms in an effort to modernize the country and reduce its dependence on oil.

The sidebar on page 10 adds to the understanding of the section "A Powerful Nation" by providing additional context and background information about Saudi Arabia's history, culture, and political system. It helps readers better understand the complexities of the country and the challenges that the monarchy faces in implementing reforms.

The reforms introduced by Prince Mohammed have had a significant impact on women in Saudi Arabia. They have been granted the right to drive, travel without the permission of a male guardian, and participate in the workforce. These changes have allowed women to lead more independent and fulfilling lives.

In the section "A More Normal Life," the author supports the claim that the social changes are welcomed by Saudi youth by providing anecdotal evidence and quotes from young people who express excitement about the reforms and the opportunities they provide.

When Ottaway says that Prince Mohammed is "trying to put these ultraconservative clerics back in their box," he means that the Crown Prince is attempting to reduce the influence of religious leaders who promote strict interpretations of Islam and resist social reforms. Prince Mohammed sees these conservative clerics as a barrier to progress and wants to limit their power.

Based on the article, the monarchy is taking several steps to hold onto its absolute authority over the people of Saudi Arabia. These include cracking down on dissent, arresting activists and critics, and controlling the media. Despite the social reforms, the monarchy remains firmly in control of the country and is unlikely to relinquish its grip on power anytime soon.

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Identify the topic(s) the text covers. Normal text 3 Examine the first and last sentences of the text. Look for repetitive words 3 or emphasized words, phrases, and ideas. Determine what main point(s) 4 the author seems to be making about the topic(s). Look for details that help develop the central idea(s). Roboto Y 12 Step 2 4 5 6 pidviata sule pidces fol survold or ex trafficking to experience a transformed life." Door to Freedom

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Topic: Recovery from trafficking and transformed life. Repetitive/ Emphasized words: "transformed life." Main point(s): The author is discussing a program called "Roboto Y 12 Step" . Details: The program is called "Roboto Y 12 Step" and is designed to help individuals.

Describe Robotics?

Robotics is a branch of engineering and technology that involves the design, construction, and operation of robots. Robots are machines that can be programmed to perform a wide range of tasks, often in situations where it may be difficult or dangerous for humans to perform those tasks. Robotics involves a combination of different fields, including computer science, electrical engineering, mechanical engineering, and artificial intelligence.

Robotics can be used in a wide range of applications, from manufacturing and industrial settings to medical and scientific research. Some examples of robots include industrial robots that perform tasks such as welding or painting in factories, drones that can be used for aerial photography or delivery, and surgical robots that assist in minimally invasive procedures.

Topic(s): Recovery from trafficking and transformed life.

Repetitive/Emphasized words: "transformed life."

Main point(s): The author is discussing a program called "Roboto Y 12 Step" that aims to help individuals who have experienced trafficking to recover and lead transformed lives. The program is called "Door to Freedom."

Details: The program is called "Roboto Y 12 Step" and is designed to help individuals who have experienced trafficking to recover. The goal is to help them lead transformed lives.

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