You’ve been waiting for the bus and your hands become cold. When you get onto the bus and sit down, you put your hands under your legs to warm up. After a while your hands feel warmer but your legs feel colder. Explain this with regards to what you know about thermal energy transfer.

Answers

Answer 1

Explanation:

The First Law of Thermodynamics states that energy cannot be created or destroyed in an isolated system. In other words, energy can be converted from one form into another, but it cannot be created nor destroyed.

Conduction is the transfer of energy from one molecule to another by direct contact. This transfer occurs when molecules hit against each other, which can take place in solids, liquids, and gases.

When you put your cold hands under your legs to warm your hands up, the heat energy from your legs is being transferred to your hands through conduction. However, since energy cannot be created, there is no extra heat energy that can instantaneously replace the heat created by your legs.

Answer 2

Every metabolic process involves energy transfer. Since as the total energy is conserved and thus no loss or gain of energy will be there in a system and to maintain this equilibrium energy transfer from lower energy spot to higher energy spot.

What is thermal energy?

Thermal energy is the energy in the form of heat and which can transfer from one part to the other as any other energy form.

As energy is conserved in a system there will be no net gain or loss of energy overall. Thus energy lost from one part travels to the other parts. Any energy forms transfer from a low intense area to high intense area.

When our hand cools down we may warm them up by rubbing on legs. Where heat energy is transferred from our legs to hands to warm it up. Thus here temperature is given to a colder part from a hot part.

This is an example of heat transfer hence, our legs cools down because some of its temperature is lost to hands still the overall temperature of the body remains balanced.

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Related Questions

Which phrase accurately describes the location of Africa? O mostly in the eastern hemisphere mostly south of the Tropic of Capricorn O borders the Pacific Ocean O lies north of Europe​

Answers

Answer:

mostly in the eastern hemisphere mostly south of the Tropic of Capricorn

Explanation:

The statement which best describes the location of Africa is that it is found

mostly in the eastern hemisphere.

Africa is a continent which comprises of countries such as Nigeria, Ghana,

Kenya etc. It is bounded on the north by the tropic of cancer and towards

the south of the tropic of capricorn.

Africa also lies in the eastern hemisphere and is found to the south of the

European continent.

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another science question plz answer ASAP b/c its timed

Answers

Answer:

D

Explanation:

Can someone pls help

Answers

D, the answer you have.

Have a good one!

What is the "mass number"? What does the mass number tell you?

Answers

Total number of protons and neutrons in the atomic nucleus. When you see a periodic table the order is usually the atomic number, the element symbol, the name, and then the atomic mass.

Answer correctly please !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!

Answers

Answer:

endothermic or absorb energy

Explanation:

google :)

Endothermic energy. When you don’t know the answer search in goggle :)

PHYSICAL SCIENCE PLEASE PLEASE HEP DUE TODAY AT 11!! will give brainly if its correct!! <3333 thank you so muchh!!

Which problem cannot be solved using the scientific method?

determining which student reads faster

discovering who invented the radio

discovering how much salt should be used to boil water faster

determining which laundry detergent works best

Answers

Answer:

I would say discovering who invented the radio.

Explanation:

The other ones can be solved by experiments and the "discovering who invented the radio" cannot be solved by an experiment.

hope this helps.

Answer:

I would say who invented the ratio

Explanation:

Well you dont need to use the scientific method to know WHO discovered it, you use it to determine HOW

salks vaccine trail was a double-blind experiment true or false

Answers

Answer:

true

Explanation:

Theme parks can snap a crystal clear picture of you on a roller coaster at 70 mph, but bank cameras can't get a clear shot of a robber standing still.

bruh.

Answers

I KNOW RIGHTTTTT!!!!

Answer:

I know right

Explanation:

Hiiiiiiiiiiiiiiiiiii

How many moles of sodium hydroxide, NaOH, are in a 35.65 g sample of NaOH?

Answers

Answer:0.8910 mols of NaOH in a 35.65 g sample of NaOH

Explanation:

the reason two atoms would form an ionic compound instead of a covalent compound mainly depends on their

Answers

I believe it depends on they’re electrons, if there was an transfer of electrons/losing or gaining e- it would be ionic and the bond is between M+Nm while Covalent is formed when atoms share e- and the bond is normally between Non-metals Nm+Nm, And Metallic bonds is called the sea of “e-“ and is normally only between Metals M+M

Explain why the following structure is incorrect

Answers

Answer:

there is too many electrons around the shell

Explanation:

Carbon atoms must bond with 4 other atoms in this structure one of the carbons only has 3 bonds with the other atoms.
Oxygen has to bond to two other atoms so the C-O bond should be a double bond to fulfil both of their bonding rules.
Hydrogen can only bond to one other atom, therefore it cannot make a double bond so that bond must be a single bond. (Carbon there is also bonding to five atoms so changing it to a single bond will fulfil both of their bonding rules).

true or false, vaporization that occurs at the surface of a liquid is called evaporation

Answers

Answer:

True

Explanation:

Vaporization that happens below the surface is boiling, above the surface is evaporation :)

Answer:

True

Explanation:

it evaporates because of the temperature difference

how does skin protect the body from pathogens?
A it produces whit blood cells that reconize and eat pathogens.
b it transsfers pathogens to lymph and blood plasma
c it traps pathogens in oil and seat produced by glands.
d. it has hairs that sweep pathogens away from the body

Answers

Answer:

C: It traps pathogens in oil and sweat

Explanation:

The skin has oil and sweat which kills pathogens as they are like a waterbarrier.

The skin protects the body from pathogens by trapping pathogens in oil and sweat produced by glands. Thus, the correct option for this question is C.

What are Pathogens?

Pathogens may be defined as those living organisms which are capable of inducing diseases in other living organisms including humans. Some examples of pathogens include bacteria, fungi, protozoa, etc.

Skin is considered the first line of defense against pathogens in humans. This is because skin significantly consists of sebaceous and sweat glands that consistently secrete oils and sweat that trap the pathogens and eliminate them from entering the body.

Therefore, the skin protects the body from pathogens by trapping pathogens in oil and sweat produced by glands. Thus, the correct option for this question is C.

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Describe the classification of electromagnetic radiation.

Answers

Answer:

The EM spectrum

Explanation:

The EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. The common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.

For the compound butane (C4H10)

a) What are the elements in the compound?

b) What are the number of atoms of each element?

c) What are the total number of atoms per molecule?

Answers

I think b not sure though
A. Carbon and Hydrogen.
B. Carbon: 6 Hydrogen: 1
C. 34

What is a probable reason that a trait skips a generation?

Answers

Answer:

A!

Explanation:

PLEASE HELP HURRY ILL MARK BRAINLEST

Answers

Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. ... Plant cells can be larger than animal cells.

Atoms and elements are examples of A. molecules. B. mixtures. C. compounds. D. pure substances.

Answers

Answer:

atom are very tiny partical

Identify the following structure as an atom, molecule, or compound molecule.


Hydrogen



A.atoms
B. molecules
C.compound molecules​

Answers

Answer:

A

Explanation:

The answer is A because Hydrogen is an Atom consists of 1 electron only.

Good luck

Please help! Will mark brainliest!

Answers

Answer:

A

Explanation:

A is the answer to the question

What is an example for "chemical equations"?

Answers

Answer:

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.

Explanation:

If one jellybean weighs 0.350g how many jelly beans are in 504g of jellybeans?

Answers

Answer:

1440g

Explanation:

Divide 504g by 0.350g

The periodic table includes all of the known elements in the world. How are elements
arranged on the periodic table?
a. by the element's name
b. by their atomic mass
c. by the number of neutrons found in the element
d. by their atomic number

Answers

Answer: D: by their atomic number

Explanation:

Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods

I’ll mark you brainlist plz

Answers

Answer:

I think nuetron stars

Explanation:

Condensation point AND freezing point of oxygen in C and F?

Answers

Answer:54.36 K (−218.79 °C; −361.82 °F)

Explanation:

What is the total number of electrons in an atom of an element with an atomic number of 18 and a mass number
of 40?
a. 58
c. 22
b. 18
d. 40

Answers

Answer:

18

Explanation:

In neutral atom protons and electrons are equal in number as it atomic number or proton number is 18 so electrons are also 18

The total number of electrons in an atom of an element with an atomic number of 18 and a mass number of 40 is 18.

What are the difference between atomic number and atomic mass ?

Atomic mass can be defined as the total number of neutrons and protons located in nucleus of an element while atomic number is the number of protons present in the nucleus of element.

Atomic mass can be defined as the average weight of an element where as the atomic number is the total number of protons present in the nucleus; Atomic mass have the  symbol A while atomic number have the symbol the letter Z.

Different isotopes of an element are differentiated by atomic mass is while isotopes share the same atomic number, in neutral atom protons and electrons are equal to atomic number or proton number is 18 and electrons are also 18

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Predict the products when aqueous solutions of sodium carbonate and calcium chloride are combined.
A)
SC(aq). CaCN)
B)
NaCl(aq), CaC)
C)
NaCl(aq), CaCO3(s)
D)
Na2CO3(aq). CaCl2(aq)

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ANSWERRRR ISSSS ▼・ᴥ・▼CCCCCC!

what type of weather forecasting can forecast from 3-7 days? I NEED ANSWERS FAST!!!

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Answer:

WPC medium range forecasting

Explanation:

How many liters will 90.0 grams of xenon gas (Xe) occupy at STP?

HELP PLEASE

Answers

Answer:

22.4L

Explanation:

not sure if its totally correct but I tried

What is different about the transition metals and
their charges from other groups on the periodic
table?
A: Their charge is positive but not always the same each
time
B: Their charge is negative but not always the same each
time
C: they are usually neutral

Answers

Answer:

i think a im not 100 %sure

Explanation:

Most transition metals differ from the metals of Groups 1, 2, and 13 in that they are capable of forming more than one cation with different ionic charges. It can sometimes lose two electrons to form the Fe2+ ion, while at other times it loses three electrons to form the Fe3+ i hope it helped

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