If you pick up a metal ruler, it usually feels cold to your hand. A wood or plastic ruler will feel warmer. But if these rulers were all sitting on your desk, then they are all room temperature. So why does one feel colder than the others? It all comes down to a property of matter called conduction. Conduction  measures how well a material (such as metal, wood, or plastic) transfers energy. The more conductive a material is, the better it transfers energy. For example, good electrical conductors transfer electricity well. Good thermal conductors transfer thermal energy well. In class, you learned about thermal conduction. When two substances with different thermal energies touch, thermal energy is always transferred from the substance with more thermal energy to the substance with less thermal energy until the thermal energy in the two substances is equal. It’s kind of like the metal, glass, and plastic are soaking up as much thermal energy as they can from the water. Metal heats more quickly because it is a better conductor than plastic or glass: it can How will you do this? How will you keep thermal energy from transferring out  of your cooker? Images, right to left:  / Public Domain - publicdomainvectors soak up thermal energy more quickly than the others. But it only does this until it is the same temperature as the water. Let's consider the rulers again. How does conduction help explain why the metal feels colder? Well, your hands are at body temperature, about 37°C (98.6°F). They are kept warm by the blood in your veins and have more thermal energy than the rulers. The rulers are at room temperature, which is probably between 20 and 30°C. When you touch each ruler, they begin absorbing thermal energy from your hand. Since the metal is a better conductor, it will take your thermal energy more quickly than the plastic or wood. The experience of losing thermal energy makes your hand feel “cold”. What if instead of a metal ruler, you were touching a big metal table? It would feel cold for much longer because there is so much more metal. It would take much more thermal energy to warm up to the same temperature as your body, meaning it would transfer a lot more thermal energy from your hand. This would make your hand feel quite chilly! How long it takes an object to change temperature depends on both the number of molecules in a substance and the thermal conductivity of the material it is made of.In your solar cooker, you will want to transfer as much thermal energy as possible to the food.​

Answers

Answer 1

Answer:

Metal conducts heat faster than wood. Thus, the metal conducted heat away from your hand (or whatever) faster than wood.

Explanation:

The key word here is "feel". Just because they feel warm/cold, doesn't always mean that it is "warm/cold".

If they were both sitting at room temperature for a long time, then both will eventually reach the temperature of the room.

Even though they are the same temperature, the metal will feel colder than the wood because of the thermal conductivity of the metal, compared to the wood.

Metal will conduct the heat to your hand (or whatever you touched the metal with) faster.

On the other hand, wood is a poor conductor of heat and will slowly conduct the heat away from your hand (or whatever) much more slowly. It's so slow that it is noticeable (compared to the metal).

It is because the metal conducted heat faster that it feels colder than the wood, which conducted heat slower. They feel different temperatures, but they are actually the same.

Another example for the real world, is when you get out of the shower and step on the carpet - feels warmer. If you stepped on the tiles, it would feel colder because they conduct heat faster.

In general, metals feel colder or hotter to the touch than other materials at the same temperature because they're good thermal conductors. This means they easily transfer heat to colder objects or absorb heat from warmer objects. Metal feels cold because it conducts heat extremely well. Since room temperature is lower than your body temperature, metal will quickly absorb the heat from your skin, making it feel cold. This is also why hot metal can burn you so easily; it will quickly transfer its own heat into your skin.

Hope this helps :)


Related Questions

which is the longest word in english . and what is it about ??​

Answers

Answer:

The correct answer is pneumonoultramicroscopicsilicovolcanoconiosis.

Explanation:

The word pneumonoultramicroscopicsilicovolcanoconiosis is an artificial word that supposedly means, "lung disease caused by inhaling very fine silica dust, causing inflammation in the lungs." It is used mainly as an example when speaking of very long words.  

A disease that meets the definition of the word is commonly called silicosis.

The 45-letter word was coined to be the longest in the English language. It is, in fact, the longest word to appear in an English dictionary, found in current editions of several dictionaries. It is usually abbreviated with the number P45.

what does clucked at him like hens mean

Answers

Verb (used without object) to utter the cry of a hen brooding or calling her chicks.

Answer:

who knows lol

Explanation:


What is the effect of the author's word choice in the
passage?

Answers

Answer:

The words the author chooses to use in a passage can change the whole tone and feeling of the story in many different ways, or add depth and detail to the story

Explanation:

What is the effect of the author's word choice in the passage?

Depending on how the author picks their words, It could change the passage tremendously, An authors word choice would/could change the tone and feeling of a article, it could also add elements to the story, enchance readers senses on a topic and even add depth and profound elements in a story.

Hope I helped. :)

- Valenteer

please can someone help my assignment in English.​

Answers

This may be the answer

how do you get warnings pls help I want to know

Answers

Answer:

if u give random and unusual answers .

Explanation:

Choose the best concluding statement for this paragraph.
A)
B)
Of course, there are other diseases which have a similarly debilitating
impact upon the emotions of the afflicted.
The treatment options for cancer patients are dependent upon what kind of
cancer they have and the extent to which it has metastasized.
Cancer is a traumatizing event in people's lives, and it is only natural that it
will exact an emotional toll upon those whom it afflicts.
Being diagnosed with cancer certainly isn't pleasant, but we live at a time
when the survival rate is better than at any previous time in history,
c)
D)

Answers

Answer:

Cancer is a traumatizing event in people's lives, and it is only natural that it

will exact an emotional toll upon those whom it afflicts.

Explanation:

Depends on who is going to read it. If a patient is going to read it, he or she will hardly care if it  has metastasized. What matters is even if it has, can it be treated.

If a medical professional is reading it, they will know exactly what the meaning of metastasized is, and they will be very concerned about the stages and the treatment for each stage.

I don't like the second one, but it is likely the answer. As a patient, I would despise an answer like that one offered to me (and yes I do have cancer, and it is treated).

I also believe if this is for a general magazine that the last one is an acceptable answer. It's bland, but it works if it is followed by something meaningful.

PLEASE HELP
I NEED A 5 PARAGRAPH LITERARY ANALYSIS ESSAY ON THE LION KING
Will give 100 points

Answers

Answer:

The film I decided to summarize is The Lion King by Walt Disney. It is an animated

film as are all Disney movies. The movie opens with the themes song “The Circle Of Life” playing as the camera show Mufasa, king of the lions holding his newborn son Simba. The whole community of animals is here at Pride Rock to witness young Simba because he is the future king. Everyone in the kingdom is happy about the birth of the new prince except for one lion. That lion is Scar. Scar is Mufasas brother and was next in line to be king before Simba took his place. Scar is angry and jealous of young Simba. Young Simba is a very happy lion. He plays all the time with his best friend, a lioness named Nala. Simba is watched by the…show more content…

Scar then tells Simba that he should leave because Mufasas death was his fault and the kingdom will be angry with him.. Simba departs Pride Rock very solemnly. Simba finds his own place to live far away. He then meets Timon (a wisecracking merecat) and Pumba (a goofy warthog). Timon and Pumba become his best friends. They teach Simba to live with no worries. The three of them sing “Hakuna Matata”. As time passes Timon and Pumba raise Simba, they become his family. Simba is a full grown lion now, much resembling his father. Meanwhile, Pride Rock is in shambles. There is no food and there are hyenas everywhere. Scar and the hyenas have ruined the once great Pride Rock.. Scar makes it the lionesses job to go out and find food. One day while out hunting for food a fully grown Nala ventures to near Simbas home. The two recognize eachother fully grown. Nala tells Simba that everyone thought he was dead. She informs him of the kingdoms state and tells him that he should return and take his place as king. Simba refuses because he feels he’s been gone too long. Also in the back of his mind he still feels guilty and responsible for Mufasas death. Nala is angered and storms off. Simba goes off to think and while hes thinking he calls to his father for help. Mufasa appears to Sima in the clouds. Mufasa tells Simba that he must take his place in the circle of life and go take the throne like he was the king of the jungle...

Explanation:

Imagine you are one of the ship’s crew, standing high up on the rigging, looking out at the sledge
being pulled across the snow. Write a letter home to your family, describing the situation of the
ship, the weather, the feelings of the crew, the sighting of the strange sledge and then the rescue
of the young man.

Guys please any help?

Answers

Answer:

Dear family,

Captain says I'm the most brave person one this ship he says im the most determined man hear but the only resone why i am is because i want to see you all again, it is cold and it wont stop snowing the ice in starting to become a problem,  this might be my last letter you ever read, Captain says we might not make it back but i cant think about it i have to stay strong i know that is what you would want, but if i dont i want you to know i love you.  

Explanation:

how to write a persuasive writting on this topic Are exams the proper measuring stick for student performance?

Answers

Answer: yes they are

Explanation:

in order to know the students level they'd do exams to see their level

PLSSSS HELP!!

With which statement would both Walt Whitman and the speaker of "When I heard the learn'd Astronomer" agree? A. Teachers always have the answers. B. Classrooms should have strict rules. C. There are many different ways to learn. D. Students should only speak when spoken too.

Answers

Answer:C

Explanation:

Who were the Radium Girls and how did they die ?

Answers

Answer:

they were female factory workers in 1910's-1920's and died to radiation poisoning due to painting watch dials with radium-laden paint

Explanation:

Answer:

The Radium Girls were female factory workers who contracted radiation poisoning from painting watch dials with self-luminous paint. The painting was done by women at three different factories, and the term now applies to the women working at the facilities: one in Orange, New Jersey, beginning around 1917; one in Ottawa, Illinois, beginning in the early 1920s; and a third facility in Waterbury, Connecticut. They died by ingesting the poison when told they had to point the brushes on their lips to give it a finer tip. Explanation:

Read the excerpt from Act 2 of The Monsters Are Due on Maple Street.



STEVE



(whirls around toward her)



Show them nothing! If they want to look inside our house—let them get a search warrant.



CHARLIE



Look, buddy, you can't afford to—



STEVE

(interrupting)

Charlie, don't tell me what I can afford! And stop telling me who's dangerous and who isn't and who's safe and who's a menace.



According to the stage directions, what is Steve’s attitude in this scene?

He is growing angry about the accusations being made against him.
He is greatly disappointed that Charlie would accuse him of such things.
He is highly amused that Charlie thinks he is involved in what is occurring.
He is secretly pleased by the accusations that are being made about him.

Answers

Answer:

a

Explanation:

Answer:

a

Explanation:

im taking the unit test as well...... SuPriZe ShAwDaYyYYy

What does MLK mean by the phrase "There comes a time when the cup of
endurance runs over, and men are no longer willing to be plunged into the
abyss of despair" in this passage?

Answers

Answer:

martin luther king

Explanation:

look at the other words to help you reach out to me if u want me to explain

MLK is using a metaphor here to explain how a time will come where people will no longer be able to tolerate injustice and prejudice, which are both issues that feel endless.

SOMEONE PLEASE HELP ME THE ANSWER IS EITHER THE FIRST CHOICE OR THE LAST​

Answers

Answer:

cinderellas hardships

Explanation:

if this helps can i have brainliest when you get the chance... thnx

Answer: Loading...

Explaination: Loading...

Rhyme scheme of sleeping in forest poem pls answer quick

Answers

Answer:

line 2 4 6 8 10 12 are the ryming scheme lines.

1. My uncle took his bike on the
steeper / steepest
trail in the park.
2. The first part of the trail was
more dangerous /most dangerous
than the last.
3. He was not the
slower / slowest
person in his group.
4. His friend Sam was
faster / fastest
than he was on the flat parts.
5. The
harder /hardest
part of the ride was the climb up the hill.

Answers

Answer:

1. steepest

2. more dangerous

3. slowest

4. faster

5. hardest

Answer:

1. steepest

2. more dangerous

3. slowest

4. fastest

5. hardest

Your Welcome!❤

I need help please help will GIVE BRAIN-LIST

This is the tittle for my essay

Influenced to becoming encouraged


What parts of the tittle for my essay should I capitalize??

Please help ASAP!!!

Answers

Answer:

Influenced to becoming encouraged

Influenced To become Encouraged

Explanation:

Always capitalize the first word as well as all nouns, pronouns, verbs, adjectives, and adverbs. ...

Articles, conjunctions, and prepositions should not be capitalized. ...

Capitalize the first element in a hyphenated compound. ...

Capitalize both elements of spelled-out numbers or simple fractions.

have a nice day T_T

How does the character of the talking skull reveal the author’s point of view in the story? For The talking skull

Answers

A man who sees himself as a philosopher and who speaks and talks about topics that are just essential to him, but who nobody else needs to know, discovers a skull.

PLEASE HELP ME! valid answer will get brainiest!!!!!
-the book is Fahrenheit 451-

Cite evidence that shows Clarisse and Montag are different from each other,
in a way that specifies each character’s differing qualities or traits.

please don't just steal points :/. I really need this.

Answers

“Her face, turned to him now, was fragile milk crystal with a soft and constant light in it. It was not the hysterical light of electricity but—what? But the strangely comfortable and rare and gently flattering light of the candle.“

“I’m antisocial, they say. I don’t mix. It’s so strange. I’m very social indeed. It all depends on what you mean by social, doesn’t it? Social to me means talking to you about things like this.“

Clairsse

Which of the following statements about Mrs. Obama’s point of view is best supported by the following passage (paragraph 34)?

But because they refused to be defined by anyone else’s idea of who they were and what they could be, because they held fast to their impossible dreams for themselves and their children, today, my two daughters wake up each morning in the White House.
Answer choices for the above question

A. She worries that her own children will not appreciate the struggles and sacrifices of their ancestors.

B. She believes that focusing on small ways to improve one’s future can have amazing and unforeseen consequences.

C. She believes that her ancestors were driven to see one of their great grandchildren become president or first lady one day.

D. She thinks it is important to keep one’s dreams realistic and not overly ambitious.

Answers

Answer: She believes that focusing on small ways to improve one’s future can have amazing and unforeseen consequences.

Explanation:

What do Lines 32-39 of "The Death of the Hired Man" say about Mary's character? the A. she is compassionate B. she is volatile C. she is argumentative​

Answers

Answer: A. she is compassionate

Explanation: The poem talks about an ill man that goes back to a farm he used to work at. When he arrives, he's welcomed by Mary, her former master, and wants to be forgiven by her husband as well for events that happened in the past. However; Warren, the husband, refuses to see him and his wife makes his best to convince him. When she comes back to where the poor man was, she finds that he has passed next to the barn door. Lines 32-39 portray how compassionate Mary is by looking at the "frightening and miserable sight" as she said.

{IF YOU ARE CORRECT YOU GET A BRAINLESS}

Read the following text:

A lady in a fine gown and hat stepped out of the carriage and strode up to the door of 221B Baker Street. She sniffled and used a handkerchief to wipe away her tears. Taking a deep breath, she rapped on the door of the world's most famous detective.

Mrs. Hudson answered the door and ushered the visitor to Sherlock Holmes' flat. The detective stood tall and confident, gazing at Mrs. Blakely with an inquisitive smile. He invited Mrs. Blakely to enter. Mrs. Hudson offered her some tea. After using the tea to warm her hands, Mrs. Blakely felt capable of explaining her situation. Yesterday afternoon, Mrs. Blakely had arrived home to find a masked individual robbing her house. When the mysterious figure heard her approach, he or she ran farther into the house and disappeared. All that remained was the black mask lying on the ground. Mrs. Blakely's most prized possession, a massive purple gem, also had disappeared. While Mrs. Blakely knew it would be useless to ask Holmes to retrieve the gem, she wanted him to determine how the thief and gem had disappeared so completely.

Sherlock Holmes listened to the tale and agreed to visit the crime scene. The safe was open and empty, but it was not damaged. There was no visible entry into the room where the safe was kept: the windows were sealed, and the door was not damaged. Mrs. Blakely led Sherlock Holmes farther into the house and stopped in the middle of a hallway of old portraits. There were no windows, and the only door was at the other end of the hallway.

"This spot is where I found the black mask," Mrs. Blakely explained.

Sherlock Holmes inspected the hallway with a wrinkled brow. He walked up and down the hallway. He put his hand on the smooth floor. Then, Sherlock's brow smoothed and a glint entered his eyes. Turning to the wall, he pressed the expensive portrait into the wall.

"What are you doing to my painting?" Mrs. Blakely gasped.

"Calm down, Mrs. Blakely," Holmes replied. "The solution to this mystery is staring you in the face. There is no sign of a break in, so the thief has access to the house. The thief disappeared in this spot without using the far door, so there must be a hiding spot within the walls or floor. There are scratches on the ground near this portrait. I felt a draft when I reached down to test the floor. It's elementary, Mrs. Blakely. The thief is hidden in the wall behind this portrait."

Holmes pushed the portrait harder into the wall. The wall moved, revealing a hiding place. Sherlock Holmes lit a candle. Its light revealed a sleeping maid with a gigantic purple gem clasped in her hands. The mystery of the disappearing thief was solved.

Select the detail that supports this statement: Mrs. Blakely was upset when she arrived to speak with Sherlock Holmes. (2 points)

a
A lady in a fine gown and hat stepped out of the carriage and strode up to the door.

b
Taking a deep breath, she rapped on the door of the world's most famous detective.

c
She sniffled and used a handkerchief to wipe away her tears.

d
Mrs. Hudson ushered the visitor to Sherlock Holmes' flat.

Answers

Answer:

the answer is B hope this helps!! :)

Explanation:

Answer: sorry i dont know

Explanation:

Passage 1
Passage 2
In Passage 2, which plot event BEST
supports the theme that things are not
always what they seem?
This modern tole and the myin Passage I share
universal themes
Maria's bashful reaction to the encounter with
the man
Piper and the Dog
When Piper and Maria rounded the
corner on their way home from school,
the girls heard the familiar yapping of a
small dog straining at the end of its rope,
Every day for the last month, the dog had
been tied to a tree in the tiny-and
increasingly overgrown-yard while
inside the house, a television screen
glowed
Maria's initial disinterest in the dog's
circumstance
Piper's adjustment to her response upon
meeting the man
Piper's determination to voice her concern
about the dog's treatment
2
3

Answers

Answer:

Pipers adjustment to her response upon meeting the man.

Explanation:

i took the quiz hope this helps :D

what's the correct answer​

Answers

Answer:

those are correct

Explanation:

!!!!!

Character traits are used to determine a character’s motivation

Answers

yes the charachter traits help you learn how this person act once you do that you will understand what will motivate them and what won't.

how to start writing essay?​

Answers

go to your room close the door turn on calming music get pencils paper ect start writings use captions capitals and more hope that helped

Free ur mind, be in a quiet place, then read what’s given to write about, brain storm ur ideas and think about what do u need to write, start writing so u get to think while ur writing, read again and again to see and fix ur mistakes.

What is most likely Mrs. Obama’s reason for including the following passage in her speech (paragraph 13)?

See, I learned respect from how my parents cared for my great aunt and uncle—how my mother would wake up in the middle of the night to check on my great aunt, how my father would prop himself up against the bathroom sink each morning, leaning hard on his crutches, to give my great uncle a shave.
Answer choices for the above question

A. To draw sympathy from the audience by detailing the difficulties her family went through

B. To show how she learned that one should sacrifice yourself to help others

C. To suggest that not everyone can have the amazing success and good fortune that she and her husband have had

D. To explain why her father could not be with them at the graduation

Answers

B

Explanation:

How her parents care for her uncle and aunt. That's real love!

On which object, the moon or earth, will Astronaut Joe feel a greater force of gravity?

Answers

I think it’s earth I believe it’s right good luck:) let me know if it’s right

"Only one person is missing," wrote French poet Alphonse de Lamartine, "and the whole world seems depopulated".

Answers

Hello. This question is incomplete. The full question is:

Where does the comma go:

"Only one person is missing" Wrote French poet Alphonse de Lamartine "and the whole world seems depopulated."

Answer:

"Only one person is missing," Wrote French poet Alphonse de Lamartine, "and the whole world seems depopulated.

Explanation:

As can be seen in the question above, the comma must be placed after the word "missing" and after the word Lamartine. As you can also see, it is important that the first comma is placed before the quotation marks ("), as this is the correct form within American English. The comma separates the phrase" wrote French poet Alphonse de Lamartine "from the rest of the sentence This must be done, because this is an additional sentence, written to extend the meaning of the sentence, but not to provide essential information.

What can you infer about water in the air?
A Water in the air contains contaminates
B Water in the air does not have contaminates
C Water in the air is very large,
D. Water in the air is very salty

Answers

Answer:

A

Explanation:

Other Questions
Who is your favorite sports player? Why are they your favorite sports player? What makes them stand out to you? Nathan is saving up to buy a new phone. He already has $90 and can save an additional $10 per week using money from his after school job. How much total money would Nathan have after 4 weeks of saving? Also, write an expression that represents the amount of money Nathan would have saved in w weeks. Which of the following foreign policy shifts was a direct result of the attacks that took place on September 11, 2001?A.national securityB.counterterrorismC.internationalismD.economic aid Mrs. Wu uses a 25% off coupon to buy 1 adult ticket and 1 child ticket to a movie. She pays a total amount of $9.00. A child ticket without the coupon costs $4.00. Write an equation that can be used to find the cost of an adult ticket, x, without the coupon. find the value of x and please show how Which product, when simplified, is negative?A 0.5(6.9)100(4)B 90[25](1)15C 3.510(7)(18.5)D 8(14)(2)(1000) Which pair of triangles below MUST be similar? Mary bought more than 72 pencils to distribute to children at an orphanage. She packs these pencils in gift boxes.If she packs 4 pencils each into x gift boxes, the inequality that represents this situation is .The simplified form of the inequality is Need help ASAPPPP PLSSSSS This is study island pls help. Which option identifies the best action to take in the following scenario?As Phil begins working, he notices the blade of his circular saw is dull.O He should apply more pressure.He should clean the material.He should use a new blade.O He should heat the blade. Evaluate (3.2) to the second power. Louis wants to carpet the rectangular floor of his basement. The basement has an area of 4,335 square feet. The width of the basement is 3/5 its length. What is the length of Louis's basement? The length is blank feet. 2. Tanya is 15 years older than Sarah. In 3 years, the sum of their ages will be 41.a) Write an expression for Tanya's age in terms of Sarah's age. Use S to represent Sarah'scurrent ageb) Write an expression for how old Tanya will be in 3 years, using the expression you wrotefor her agec) Write an expression for how old Sarah will be in 3 years, using S to represent Sarah'scurrent age.d) Write an equation that shows the sum of their future ages will be 42e) Solve that equation to find Sarah's current agef) What is Tanya's current age? SOMEONE LIKE ACTUALLY HELP In Night by Elie pgs45-63 What did the musicians do each morning at the camp prior to going to work? what are some excuses to tell your teacher for not doing homework online?please make it good for theology PLEASE HELP QUICKLY!! Urgent please help.. What is the value of x? After you withdraw $35 from your checking account, the new balance is $260. Which equation shows the equation that could be used to find the balance on your account before the withdrawal?