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A 0.023 kg beetle is sitting on a record player 0.15 m from the center of the record. If it takes 0.070 N of force to keep the beetle moving in a circle on the record, what is the tangential speed of the beetle?

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Answer:

0.68 m/s

Explanation:

The centripetal force that keeps the beetle moving in circle is given by:

F=mfrac{v^2}{r}

where

m is the mass of the beetle

v is the tangential speed of the beetle

r is the distance of the beetle from the center of the record

In this problem, we know the force (F=0.070 N), the mass of the beetle (m=0.023 kg) and the distance from the center (r=0.15 m), therefore we can re-arrange the equation to find the tangential speed:

v=sqrt{frac{Fr}{m}}=sqrt{frac{(0.070 N)(0.15 m)}{0.023 kg}}=0.68 m/s

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When is it legal to operate a motorboat with someone sitting on the gunwale?

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Answered by answersmine AT 22/10/2019 – 05:18 AM

The correct answer is when the boat is equipped with adequate side railings. Without the railings it is highly illegal, both to be there and on the starboard side. This is because it’s dangerous and people can get hurt, or worse. If you have adequate railings then it is allowed.

Post your answer

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A 0.023 kg beetle is sitting on a record player 0.15 m from the center of the record. if it takes 0.070 n of force to keep the beetle moving in a circle on the record, what is the tangential speed of the beetle? 0.68 m/s 0.46 m/s 0.33 m/s 0.11 m/s

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Answer:

Tangential speed is 0.68 m/s

Explanation:

It is given that,

Mass of the beetle, m = 0.023 kg

It is placed at a distance of 0.15 m from the center of record i.e. r = 0.15 m.

If it takes 0.070 n of force to keep the beetle moving in a circle on the record i.e. centripetal force acting on it is, F = 0.070 N

We have to find the tangential speed of the beetle. The formula for centripetal force is given by :

F=dfrac{mv^2}{r}

v is tangential speed

v=sqrt{dfrac{Fr}{m}}

v=sqrt{dfrac{0.070times 0.15}{0.023}}

v = 0.675 m/s

or

v = 0.68 m/s

Hence, the correct option for tangential speed is (A).

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Read the following passage and answer the question. My children, latest generation born from Cadmus, why are you sitting here with wreathed sticks in supplication to me, while the city fills with incense, chants and cries of pain? … so I have come in person—I, Oedipus, whose fame all men acknowledge. … I shall assist you willingly in every way. I would be a hard-hearted man indeed, if I did not pity suppliants like these. The phrase “born from Cadmus” is an example of _____. a motif a patronymic foreshadowing irony

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Hey there!

Correct answer is D. Comma or Period Inside Rule

A. Question mark or exclamation point inside: those are not really necessary.

B. Colon or semicolon: not, a semicolon would divide the whole sentence and it would be shorten; a colon would work but after requested, when there is already a comma.

C. Question mark or Exclamation Point Outside Rule: would not work, becase it is an very polite and affirmative sentence.

D: A comma or period inside rule: actually, just a comma would work. Please, Cooper’s dad requested, go… Cooper’s dad requested must be in between commas as it is a vocative.

Hope this helps

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The painting below was created in the late 1800s: An image of a teacher sitting in front of a classroom with small children is shown. The children have blocks in front of them. Some of the children have their hands raised while other children are sleeping. © Getty Images/Image Quest 2012 Which of the following movements was instrumental in creating the scene shown in this painting? Social Darwinism movement settlement house movement Niagara movement nativist movement

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Karl Marx developed the economic theory of communism.

Further Explanation:

One of Karl Marx’s most famous contributions came in his book the Communist Manifesto. This book explained Mark’s views on government, the economy, and ultimately lead to the creation of communism as an idea.

A communism system is one that is economic and political in nature. In this system, the government would control the means of production, the distribution of goods and resources, and would overall have significant control over society. This system of communism is the opposite of the capitalist/democratic system used in America today. These two ideologies would clash during the mid 20th century in what is now known as the Cold War.

Marx’s ideas were based on his observations of the world around him. He felt that the mistreatment of labor by industry and private corporations would ultimately lead to an uprising by angry laborers all over the world.

Learn More:

Explanation of Cold War- brainly.com/question/1596857

Key Details:

Topic: World History, Communism

Grade Level: 7-12

Keywords: Karl Marx, Communism, Communist Manifesto

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Your brother and you waited in the doctor’s office for his appointment because he was not feeling well. While sitting in the waiting room, you watched your brother complete the medical questionnaire to be given to the new doctor. Review the form and then determine the best course of action: MEDICAL HISTORY Parents Grandparents Uncles Aunts Cancer Unknown Unknown Unknown Unknown Heart disease Unknown Unknown I think so? I think so? Diabetes Unknown Unknown Unknown Unknown What should you recommend to your sibling? A. Suggest rescheduling the appointment until the form has complete information B. Complete the appointment, talk with family elders, and update the form C. Complete the appointment, manage his problem, and talk with family elders D. Call older family members and request medical information for the follow-up visit

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1. The answer is “C”.

“Identical twins” who have been raised apart are typically more similar in intelligence level than biological siblings raised together because they have been born with the same genetic code.

Identical twins originate from a single fertilized egg that parts into two. Before it parts, it is either male or female. After it parts, there are either two guys or two females. The two sections of the fertilized egg embed in the uterus and every create one of the twins.  

Identical twins have the equivalent hereditary source. No immediate reason for monozygotic twinning has been resolved; it isn’t innate. Monozygotic twins speak to around 33% all things considered. They may look strikingly comparative, and it might be hard to reveal to them separated.

2. The answer is “A”.

Lawrence Kohlberg felt that one of the only ways individuals will accomplish the objectives in each of his six stages was to participate in “consensus democracy” in small group settings.

Lawrence Kohlberg felt that the best way to support development through these stages was by discourse of good problems and by investment in consensus democracy inside small groups. Consensus democracy was rule by understanding of the gathering, not larger part rule. This would invigorate and widen the reasoning of youngsters and grown-ups, enabling them to advance starting with one phase then onto the next.

3. The answer is “D.  showing a learner how to correct common mistakes”.

The term scaffolding alludes to a procedure in which instructors display or exhibit how to take care of an issue, and afterward venture back, offering support as required. Analyst and instructional architect Jerome Bruner first utilized the term ‘scaffolding’ in this setting, harking back to the 1960s. The hypothesis is that when understudies are given the help they require while discovering some new information, they stand a superior possibility of utilizing that learning freely. Bruner suggests positive association and three methods of portrayal amid educating: activities, pictures, and dialect.  

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(Informational Response) Review the excerpt above. Answer the following question in a well-developed paragraph. How does the excerpt prepare the reader for the last line? What details and descriptions prepare the reader for the change in tone and mood in that final line? **Be sure to re-state the question in your topic sentence and use specific examples and details from the story to support your answers. Proofread your work before submitting. Chapter I, The Beginning of Things They were not railway children to begin with. I don’t suppose they had ever thought about railways except as a means of getting to Maskelyne and Cook’s, the Pantomime, Zoological Gardens, and Madame Tussaud’s. They were just ordinary suburban children, and they lived with their Father and Mother in an ordinary red-brick-fronted villa, with coloured glass in the front door, a tiled passage that was called a hall, a bath-room with hot and cold water, electric bells, French windows, and a good deal of white paint, and ‘every modern convenience’, as the house-agents say. There were three of them. Roberta was the eldest. Of course, Mothers never have favourites, but if their Mother HAD had a favourite, it might have been Roberta. Next came Peter, who wished to be an Engineer when he grew up; and the youngest was Phyllis, who meant extremely well. Mother did not spend all her time in paying dull calls to dull ladies, and sitting dully at home waiting for dull ladies to pay calls to her. She was almost always there, ready to play with the children, and read to them, and help them to do their home-lessons. Besides this she used to write stories for them while they were at school, and read them aloud after tea, and she always made up funny pieces of poetry for their birthdays and for other great occasions, such as the christening of the new kittens, or the refurnishing of the doll’s house, or the time when they were getting over the mumps. These three lucky children always had everything they needed: pretty clothes, good fires, a lovely nursery with heaps of toys, and a Mother Goose wall-paper. They had a kind and merry nursemaid, and a dog who was called James, and who was their very own. They also had a Father who was just perfect—never cross, never unjust, and always ready for a game—at least, if at any time he was NOT ready, he always had an excellent reason for it, and explained the reason to the children so interestingly and funnily that they felt sure he couldn’t help himself. You will think that they ought to have been very happy. And so they were, but they did not know HOW happy till the pretty life in the Red Villa was over and done with, and they had to live a very different life indeed. The dreadful change came quite suddenly.

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Answer:

D) I drove them, all three wailing, to the ships,

Explanation:

Odysseus chooses to do battle with the Greeks despite the fact that he wouldn’t like to leave his wife and child. Being a decent pioneer he will be, he sets aside his own wants and unselfishly offers himself to fighting for his nation.

During the war with Troy, he is splendid in fighting. He thinks of the possibility of the Trojan Horse. At the point when the Trojans open their doors and get the Trojan Horse, Odysseus and the Greeks get inside the city of Troy. Odysseus drives his men to triumph.  

During his trek home from the war, Odysseus drives his men through numerous obstructions. He is brave even with beasts and hazardous ladies, for example, Circe and Calypso. Odysseus never surrenders in attempting to protect his men. Despite the fact that he loses men, he is crushed by the way that he couldn’t spare every one of his men.

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Read the passage. Then, answer the question(s). A modern dentist would certainly enjoy having a hadrosaur as a client. Although an adult human being has only 32 teeth, these duck-billed dinosaurs of the Late Cretaceous Period had up to 2,000 teeth, with 500 along each side of each jaw. Unlike human beings, who grow two sets of teeth in their lifetimes, the hadrosaurs, like sharks and modern reptiles, had built-in replacement teeth. If a tooth became worn down or broke off, a new one would take its place. In skeletal remains of the jaws of these toothy beasts, scientists have found entire banks of replacement teeth. Like athletes sitting on the bench, they were ready and waiting to be put to use. Which statement or detail from the passage best helps readers picture a hadrosaur’s teeth?

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The correct answer is A. A tragedy has characters who suffer pain and loss, while a comedy has funny situations and a happy ending.

Explanation;

Both tragedy and comedy are genres of literature that commonly display fictional stories, character, and events; however, they differ in their focus and features. In the case of tragedy, this has a sad ending and the situations presented include mostly events that focus on suffering and difficult situations the characters are unable to overcome.

On the other hand, the comedy focuses on humor and entertaining situations, has a happy ending and aims at entertaining and making the audience laugh rather than making them feel bad about characters. According to this, the statement that shows the difference between tragedy and comedy is “A tragedy has characters who suffer pain and loss, while a comedy has funny situations and a happy ending”.

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ASAP PLEASE HELP ME Time seems to be the only thing that man hasn’t learned to control; but I am sure some genius like Fred Johnson is currently working on it, while sitting in a cubicle checking the four thousand emails on his Palm Pilot. What is the effect of the hyperbole used in this sentence? A) It emphasizes the many tasks in a day of business. B) It emphasizes that the author strongly dislikes Fred. C) It emphasizes the many important tasks given to Fred. D) It emphasizes that the author misses the familiar routine of business.

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The order that man must create out of the chaos of the universe creates a feeling that Sartre calls anguish.

Sartre , XX century, thinks that man is thrown into the existing world. He believes that existence comes before essence. This means that man lives in a context and this experience or existence in time and place will make him be. He can be poor, rich, intelligent, wise, selfish ,etc. Man is not born with these characteristics, so these are not part of man’s essence. The fact , then, that man has to construct his own way in this chaotic world is what makes him feel anguish.

These are not right:

instinct ( Instinct is part of our innate or essence. Sartre does not believe in this.)

omen ( Man will not live according to any prophesy. Man will be the creator of his own destiny).

quietism ( Sartre opposes this idea because man is expected to act upon the universe not to just contemplate it).

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Although Thomas was sitting right next to his friends in the park, he was able to smell buttered popcorn a couple of minutes before they did. He has a lower __________ for smells than his friends.

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Answer:

1) small, hard spheres with insignificant volumes

2)The atmospheric pressure below sea level is higher.

3) some of the absorbed energy is converted to potential energy, and some is converted to kinetic energy

4)More molecules have enough energy to overcome the attractive forces holding them in the liquid.

5)three dimensions only

6) lower

Explanation:

1. The particles of gas are small, hard spheres with insignificant volumes. they are not slow moving.

2. Due to more air weight  below sea level compare with at sea level, the atmospheric pressure is more below sea level, the pressure decreases with increase in altitude.

3. On heating gas molecules, they gain energy. This energy is being converted to potential energy and some of it to kinetic energy. It increases the speed of gas molecules.

4. The evaporation occur when a liquid gains sufficient energy to overcome the inter molecular attractions and escape from the surface of liquid.

5. The patterns repeat in all the three dimensions.

6. Due to stronger inter molecular interactions in ionic compounds, they have higher melting points than molecular solids.

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