.A cop car's siren has a frequency of 700 Hz, if you are standing on the sidewalk as the cop car approaches you at a speed of 15 m/sec, what frequency would you hear? 20 °C

Answers

Answer 1

Answer:

732 Hz

Explanation:

Given the following :

Frequency (fs) of siren = 700Hz

Speed (vs) of approaching car = - 15m/sec

Velocity of listener(vl) = 0

Velocity of sound wave = 340m/s

From doppler effect, use the formula :

fl = [(v + vl) / (v + vs)] fs

Where fl is the frequency heard by the listener

fl = [(340 + 0) / (340 +(- 15) )] * 700

fl = [ 340 / 325] * 700

fl = 1.0461538 * 700

fl = 732.30769

fl = 732 Hz ( to the nearest whole number)


Related Questions

Select the correct answer. Sean wrote a research paper last week but didn't cite any of his sources. What is this called? A. objectivity B. drafting C. plagiarism D. revising

Answers

Answer:

C. Plagiarism

Explanation:

When you do research for a paper and use other people's words, that is considered plagiarism. I wrote an article on plagiarism if you want you can read through it.

https://docs.google.com/document/d/13s6h1UpfSw3wHKyNLQ0aS6_ddHBSUaeinoGD3Pru4LQ/edit?usp=sharing

Select the correct answer. Which claim made by the author lacks credible evidence and details? A. They also help the environment by refreshing the air and by reducing smog and effects to the ozone layer. B. This means that irrigation for crops is not a problem. C. With a little thought, any city dweller can think of an area of land on which to grow a garden. D. Urban gardeners use these roofs to construct large planters for vegetables, grass, trees, and shrubs.

Answers

Answer:

A. They also help the environment by refreshing the air and by reducing smog and effects to the ozone layer.

Explanation:

The author makes a claim that environment is refreshing by the air and the effects on ozone layer are reduced. This statement is not supported by the evidence. The ozone layer is polluted by the environment pollution. The pollution created by humans is also affecting the air which ultimately pollutes the ozone layer.

The answer would be "This means that irrigation for crops is not a problem." It wasn't that easy, nor did he have proof.

Select the correct answer. Read the sentences from the passage. Some may argue that learning another language is difficult, and they are probably right. But there are more advantages that make the effort worth it. Why does the author include these sentences? A. to suggest that not everyone has the ability of learning to speak another language B. to persuade others that the benefits of learning another language is job security C. to address an opposing view about the benefits of learning another language D. to show that learning another language requires hard work and determination

Answers

Answer:

i would think B. but im not sure

Explanation:

Which excerpt is an example of metonymy? A. “Since Number Five is out of the bathroom now,” B. “We think of lukewarm water and hope to get in it.” C. “I shall be telling this with a sigh somewhere ages and ages hence” D. “I watch you wrapped up like garbage”

Answers

Answer:

“Since Number Five is out of the bathroom now,” B. “We think of lukewarm water and hope to get in it.” C. “I shall be telling this with a sigh somewhere ages and ...

Explanation:

Answer:A

Explanation:

what’s an example of cyber world pls help i only have 20 minutes left to turn this in!!!

Answers

Answer: Any word really.

Explanation: Think back to something someone has said to you in the past or to someone you may know, online (virtually) that may have hurt some feelings.

The following question is based on your reading of “On Women's Right to Vote."
Based on your readings of the speech given by Susan B. Anthony, how much was the fine she was ordered to pay?
a. $50
c. $150
b. $100
d. nothing

Answers

Answer:

b. $100.

Explanation:

Susan B. Anthony was an activist who worked hard for the rights of women and other American people in general. She was also one of the hard-lined abolitionists who wanted equal rights for everyone, not just women but also African Americans, slaves, etc.

In 1872, she registered to vote in the Presidential election in the city of Rochester, New York when she was arrested and imprisoned. During those times, women had little to no rights, not even the right to own property or be a part of society like voting. Men, excluding the slaves and African Americans, were deemed o be the only ones allowed or capable to vote. So, when she was arrested for trying to participate in a man's world, the judge during her trial ordered her to pay a fine of $100, to which Anthony replied "I shall never pay a dollar of your unjust penalty".

Which of the following details from the story best helps the reader imagine the setting of the competition? A. There were many different types of dogs, but none like Sporty. B. The owners had to stand behind a yellow line that had been spray-painted across a 40 foot by 80 foot grassy field. C. Sporty sprinted, launched himself into the air, did a forward somersault, and caught the Frisbee before landing on all fours. D. The rival, a sleek Boxer named Raj, effortlessly bounded and gracefully plucked the Frisbee from the sky.

Answers

Answer:

B. The owners had to stand behind a yellow line that had been spray-painted across a 40 foot by 80 foot grassy field.

Explanation:

Statement B is describing the physical setting of the competition, therefore, it is the statement that best helps the reader imagine the setting of the competition.

The other three statements, on the other hand, are describing actions or characters, wich are not that helpful to establish the setting.

Answer:

B. The owners had to stand behind a yellow line that had been spray-painted across a 40 foot by 80 foot grassy field.

Explanation: Statement B is describing the physical setting of the competition, therefore, it is the statement that best helps the reader imagine the setting of the competition.

The other three statements, on the other hand, are describing actions or characters, which are not that helpful to establish the setting.

If you were able to write a screenplay for any historically important person (must be alive), who would you choose and why?

Answers

Answer:

Michelle Obama

Explanation:

Michelle Obama is an important public figure and was the first African American First Lady, along with her husband, Barack Obama, the first African American President. She has written many books on being confident and righteous, and is an amazing person is general. She was a public figure during her time as First Lady, and still is an inspiring politician.


Hopefully this helps!

If I were able to write a screenplay for any historically important person who is alive I would choose Queen Elizabeth II. I would choose her because of how she has ruled over the United Kingdom (England, Wales, Scotland and Northern Ireland), numerous other realms and territories as well as head of the Commonwealth, the group of 53 sovereign nations that includes many former British territories. She has also influenced the government and political affairs. Queen Elizabeth II has also been declared the longest-reigning British monarch in history due to passing Queen Victoria’s record of 63 years and 216 days on the throne.

how does the mask help if you well?​

Answers

Answer:

A mask keeps terms less fortunate of spreading and slows the transmission of disease or illness this is why now in this pandemic we have been asked to wear masks because it is 85% efficient and trustworthy of spreading viruses slower than wearing without

Hope this helps:)

Explanation:

Answer:

The World Health Organization and the U.S. Centers for Disease Control and Prevention (CDC) now include face masks in their recommendations for slowing the spread of the virus. The CDC recommends cloth face masks for the public and not the surgical and N95 masks needed by health care providers.

Which sentence best matches the context of the word reticent as it is used in the following example?

Answers

Answer:

He wouldn't really reveal his feelings

Explanation:

RIKU:
O.K., so we agree that Judge Holden isn't a villain. At least,
he's not a traditional kind of villain.
Which student is most clearly challenging established ideas?
A. Riku
B. Maria
C. Victor
D. Edgar

Answers

The answer to the question is c

Based on part two of Trifles, what did the bird’s singing most likely symbolize to Mrs. Wright?

Answers

Answer:

Your answer is B. freedom and beauty

Explanation:

Still correct on Edge in 2020 :)

Based on part two of Trifles, freedom and beauty did the bird’s singing most likely symbolize to Mrs. Wright.

Who is the writer of "Trifle"?

"Trifle" is the play written by Susan Glaspell. The play is a one-act play divided into three parts. The play opens with the investigation of the murder of John Wright. Sheriff Henry, Mrs. Pale, Mrs. Peters enters the house of Wright's. Mrs. Wright is suspected of the murder of her husband.

In part two of the play, Mrs. Pale and Mrs. Peters goes upstairs to investigate further. There they find a birdcage and Minnie, the canary, dead in pieces in the cage. The singing bird was the symbol of beauty and freedom to Mrs. Wright.

Mrs. Hale recounts that young Mrs. Wright used to love to sing. Minnie Wright was the symbolism of Mrs. Wright's youth. When she was free and beautiful.

Therefore, Based on part two of Trifles, freedom and beauty did the bird’s singing most likely symbolize to Mrs. Wright.

Learn more about Trifles on:

https://brainly.com/question/15256466

#SPJ6

Why does Artemas not mind having to clean latrines in order to sail on the ship?

Answers

Answer:

Because Artemas needs to sail on the ship to Spain to find to find Damon's father who is fighting in Caesar's army.

Explanation:

This question is about The Wadjet Eye by Jill Rubalcaba that is a story about Damon and Artemas, two characters that begin a journey from Egypt to Spain to find Damon's father who is a soldier in Caesar's army to tell him about his mother's death. Artemas doesn't mind having to clean latrines in order to sail on the ship because he and Damon need to go to Spain to look for Damon's father.

your grandfather has recently told you about how he grew up .narrate this story to your brothers and sisters at home​

Answers

Grandpa told me about his life growing up; when he was just 16, there was a job opening at the nearby car wash. His Mom and Dad wanted him to go and apply for the job, so he did. Grandpa Frank walked down the street and sat down for his interview. Then, the boss’s daughter walked out and sat in front of him. “What’s your name?” She asked. “Frank, and yourself?” He replied. “Grace, nice to meet you.” She smiled. Grandpa Frank was already noticing how beautiful the girl was. He wanted the job just to talk to her. The interview went on and Grandpa Frank went home until he was called a few days later being told he got the job! He was so excited & quickly went to work the next morning. Everyday he worked; Grace would talk to him at his lunch break. It was their own little dates. A few years later the car wash was shutting down due to going bankrupt. Grandpa Frank didn’t want to loose Grace; so on a cold, starry Tuesday night, he got on one knee & asked Grace to marry him. Grace quickly agreed then got married the next week. That’s the story how Grandpa Frank met Grandma Grace.

What is meant by a " direct combination reaction " Cite an example of such a reaction



Answers

Answer:

A chemical reaction in which two simple substances combine to form a complex substance is called direct combination reaction. example: it is represented by: direct combination reaction is a fashion reaction as there is a fusion of two or more simple substances

An orange fruit drops to the ground from the top of a tree 45m tall.how Long does it take to reach the ground?(10m/s)​

Answers

Answer:

3 seconds

Explanation:

Height(S) of tree = 45m

Acceleration due to gravity (g) = 10m/s^2

From second equation of motion:

S = ut + 0.5at^2

Where:

u = initial velocity ; t = time taken ; a = acceleration due to gravity; S = distance or height

Here u = 0

S = ut + 0.5at^2

Plugging our values :

45 = 0(t) + 0.5(10)(t^2)

45 = 0 + 5t^2

5t^2 = 45

t^2 = 45 / 5

t^2 = 9

Taking the square root of both sides

t = 3s

Based on the essay’s central ideas, what is Emerson trying to convince the reader to think or do?

Answers

Answer:

A...B...D...F

Explanation:

Edge 2021

Place the correct punctuation for “I like to read several things newspapers magazines books and poetry.”

Answers

Answer:

I like to read several things newspapers magazines, books and poetry.

Explanation:

when you are naming things you always need a comma to separate them or it is incorrect punctuation and that was the mistake

give me brainiest pls

Answer:

The correct answer is

Explanation:

U should remove one word.

I like to read several newspapers,magazines,books and poetry.

Hope this helps....

Have a nice day!!!!

Select the correct answer.
What was the intended purpose of revolutionary pamphlets and articles, such as Thomas Paine's Common Sense and "The Crisis, No. 1"?
OA to argue that the worldwide British colonies should unite and fight back against British domination
OB. to convince the American colonists to declare independence from Britain
Oc to inform the American people about the views and actions of the British Government
OD. to persuade American colonists to seek assistance from members of the British Parliament
Reset
Nex

Answers

Answer:

C. if not C then A

Explanation:

An article about the environmental impact of recycling would be considered a _____. A)narrative nonfiction B)memoir C)informative nonfiction D)biography

Answers

Answer:

C- Inform. nonfiction

Explanation: Although they are telling true stories, narratives aim to bring the events to life for readers, making it three-dimensional as opposed to simply stating the facts. By contrast, informational texts focus solely on teaching the audience the most essential facts about a topic

Quotes should take up no more than
percent of your paper.
O A. 50
OB. 80
O C. 10
O D. 25​

Answers

━━━━━━━☆☆━━━━━━━

▹ Answer

C. 10

▹ Step-by-Step Explanation

When you write too many quotes, you don't get enough of your own thoughts in and the paper is meant to be written about your thoughts, not just quotes. Using too many quotes can also lead to thoughts of plagiarism, so no more than 10% of your paper should be taken up by quotes.

Hope this helps!

CloutAnswers ❁

━━━━━━━☆☆━━━━━━━

Choose the correct type of work based on the formatting of the title. There is only one correct option. _Where’s My Meatloaf? And Other Stories_. Choose 1 answer: (A: novel B: short story C: collection of short stories

Answers

Answer:

Collection of short stories.

The name explains it really well.

Hope this helps....

Have a nice day!!!!

Answer:

CORRECT (SELECTED)

collection of short stories

Explanation:

i got it right so thats how i now :)

Question #2: Make a sentence by adding the correct group of words. During the birthday party _______. A.the one-year-old cried B.the one-year-old crying and eating C.the one-year-old

Answers

Answer:

The answer is A.

Tybalt: This, by his voice, should be a Montague. Fetch me my rapier, boy. What! dares the slave Come hither, cover'd with an antick face, To fleer and scorn at our solemnity? Now, by the stock and honour of my kin, To strike him dead I hold it not a sin. —Romeo and Juliet, William Shakespeare How does Tybalt’s relationship with Romeo affect his reaction to Romeo being at the party? He thinks Romeo is there to insult his family because of the ongoing feud. He thinks Romeo is there to wear a silly mask and dance because he is an entertainer. He thinks Romeo is there to work as a servant, because they are not equals. He thinks Romeo is there to challenge him to a fight because they hate each other.

Answers

Answer:

He thinks Romeo is there to insult his family because of the ongoing feud.

Explanation:

edge 2022

Answer:

He thinks Romeo is there to insult his family because of the ongoing feud.

Explanation:

A

Ten rupees ……… not enough for Tiffin. (is, are, an)

Answers

Ten rupees are not enough for Tiffin.            ↑(answer)

Answer:

Ten rupees are not enough for Tiffin.

(as it is his belonging sort of)

To write a summary, a person should look at the main idea of each
paragraph
page
chapter
sentence

Answers

To write a summary, you need to look at the main idea of each: paragraph.

To write a summary, a person should look at the main idea of each paragraph. Therefore, the option (a) is correct.

What is summary?

The term summary refers to the whole content are in short summarizes summary. The summary is a concise form of the para. The concise but include all information. The summary are main purpose is short the sentence with outline the important points.

The summary of the main idea of the paragraph. The reader is read the passage are easily to click the meaning of the paragraph. The paragraph is  the concluded in the summarized way. The reader is the paragraph and then summary create in her mind. The main idea of the summary are cons ice format to easily dieted and explain.

As a result, the summary of the idea of the paragraph. Therefore, option (a) is correct.

Learn more about on summary, here:

https://brainly.com/question/24839707

#SPJ2

Some days, clouds gather in the sky. The air feels wet. Winds
begin to blow. Lightning might even be seen. Thunder might be
heard. Waterfalls from the clouds.
3. Clouds can bring

friends.

rain.

birds.

dirt.

Answers

Answer:

Clouds can bring rain.

Explanation:

Clouds can bring rain
Answer: B.

Which of the following is an example of a subordinate conjunction?
O I went to the store.
O Friendly
O Because
Semi-colons and commas

Answers

Answer:

Because

Explanation:

As an adverb, it signals the beginning of a dependent clause.

Answer:

O Because

Explanation:

singular verbs sentences​

Answers

Answer:

See explanation section

Explanation:

We understand that verbs are set of words that show action or doing words.

Taking it further, singular verbs are categories of verbs that show actions in singular form.

Few examples are:

goes, becomes, catches, eats, does, is etc.

Few sentences are

She eats well

Francis catches the ball

He goes to school, everyday

Let's run away before the news goes public.

The words in bold are singular

Which option is a type of effective question a. vague b.close-ended c.leading d.clarification

Answers

Answer: C

Explanation:

this one is mostly just narrowing down the answers! You don’t want a vague and close-ended question, that’s the opposite of what you want! clarification is something you want in an answer, not a question. So that leaves answer C

Answer:

the correct answer is clarification i just took the test n i got it wrong bc of the guy who answered dont listen to that monkey he a dummy

Explanation:

hes a peice of $h!t kol khara sharmouta

Other Questions
If a person accidentally or unintentionally uses copyrighted material, does the copyright holder have a legitimate claim for infringement Can anyone help me with this ?? Describe Southern resistance to the 13th, 14th, and 15th Amendments. Give examples of what the South did to "get around" each of these amendments. The numbers of words defined on randomly selected pages from a dictionary are shown below. Find the mean, median, mode of the listed numbers. 30 31 64 59 57 33 54 77 56 41 What is the mean? Select the correct choice below and ,if necessary ,fill in the answer box within your choice.(around to one decimal place as needed) ILL MARK BRAINLIEST IF CORRECT In your opinion, what is the key benefit and key cost of mercantilism? do foxes hunt alone yes or no. A project will reduce costs by $37,000 but increase depreciation by $17,300. What is the operating cash flow if the tax rate is 40 percent? If the area of the figure is 16 square centimeters, what is the height of the triangle? 5 less than a number is equivalent to 1 more than three times the number. Nine and one-half less than four and one-half times a number is greater than 62.5. Which of the following represents the solution set of this problem?(16, positive infinity)(Negative 16, positive infinity)(Negative infinity, 16)(Negative infinity, Negative 16) Choose the inequality that represents the following graph. . En el tringulo ABC, la medida del ngulo exterior en el vrtice B es el triple de la medida del ngulo C y la mediatriz de BC corta a AC en el punto F. sabiendo que FC=12. Calcular AB. The approach to measuring GDP that adds together compensation to employees, rents, interest income, dividends, undistributed corporate profits, proprietors' income, indirect business taxes, the consumption of fixed capital, and net foreign factor income earned in the United States is the: Yo help me real quick? Based on the essays central ideas, what is Emerson trying to convince the reader to think or do? According to the FTC's historical guidelines for mergers, would the FTC approve a merger between two firms that would result in an HHI of 1,025 after the merger?A: Maybe. The FTC would scrutinize the merger and make a case-by-case decision.B: Yes, the FTC would ignore the merger and allow it to go through.C: No, the FTC would probably challenge the merger.2. Instead of defining a market and counting up total sales, what are antitrust regulators looking at today when determining whether to allow a merger or not?A: HHIB: industry competitionC: four-firm concentration ratioD: innovation3. Price cap regulations are a market regulatory device governments utilize, where the top price a firm can charge is locked in for a defined period of time. All of the following statements are true, except:_________.A: The government sets a price by looking at the firm's average costs and then adding a normal rate of profit.B: The firm can make high profits by producing a higher quantity than expected.C: The firm can make high profits by producing at lower costs.D: The government sets a price level for a few years. Which of the following details from the story best helps the reader imagine the setting of the competition? A. There were many different types of dogs, but none like Sporty. B. The owners had to stand behind a yellow line that had been spray-painted across a 40 foot by 80 foot grassy field. C. Sporty sprinted, launched himself into the air, did a forward somersault, and caught the Frisbee before landing on all fours. D. The rival, a sleek Boxer named Raj, effortlessly bounded and gracefully plucked the Frisbee from the sky. Winnwbagel corp. currently sells 25,200 motor homes per year at 37,800 each, and 10,080 luxury motor coaches per year at $71,400 each. The company wants to introduce a new portable camper to fill out its product line., it hopes to sell 15,960 of these campers per year at $10,080 each. An independent consultant has determined that if the company introduces the new campers, it should boost the sales of its existing motor homes by 3,780 units per year, and reduce the sales of its motor coaches by 756 units per year. What is the amount to use as the annual sales figure when evaluating this project? a. $237,293,280.b. $262,271,520. c. $357,739,200.d. $95739200.e. $160,876,800.f. $249,782,400. Given v(x) = g(x) (3/2*x^4 + 4x 1), find v'(2). On January 1, a company issued 5%, 15-year bonds with a face amount of $80 million for $59,249,660 to yield 8%. Interest is paid semiannually. What was the interest expense at the effective interest rate on the December 31 annual income statement