A student likes to attend football games, no matter how cold and snowy the weather becomes. She is going to a game on a very cold day and takes along a hand warmer. She activates it and tucks it into the glove she is wearing. She holds her hands together, and before long, her hands are warm. Which best describes how her hands were warmed?
a: Heat was transferred by conduction, resulting in an increase in kinetic energy.
b: Heat was transformed by convection, resulting in the conservation of energy
c: Thermal energy was transferred by currents, resulting in an increase in kinetic energy.
d: Heat was transformed by radiation, resulting in an increase in kinetic energy.

Answers

Answer 1

Answer:

The correct answer is - a: Heat was transferred by conduction, resulting in an increase in kinetic energy.

Explanation:

Conduction is ne of the het transfer method where particular substance is heated and increase the kinetic energy which leads to the molecules to vibrate more and move or jump to the particles present in neughbouring substance  and transfer some part of the enrgy.

This transfer is a continuous process untill both end become of same temperature of have same kinetic energy, In this case, heat is tranfer ffrom hand to gloves and to the other hand which are hold together after activating them.


Related Questions


Pls help I’m so confused :(

Answers

Answer:

Left is synthesis, right is digestion

Explanation:

Synthesis refers to the creation of a product, whereas digestion refers to the breakup of the reactant or initial substance.

Which substance increases its volume when it becomes a solid?
A. Mercury
B. Water
C. Salt​

Answers

Answer:

B

Explanation:

when water is frozen, it expands, something to do with anomolous expansion of water.

Water increases its volume when it becomes a solid.

Define volume and its units?

Volume is a measure of occupied three-dimensional space. It is often quantified numerically using SI derived units or by various imperial or US customary units. The definition of length is interrelated with volume.

The surface-area-to-volume ratio, also called the surface-to-volume ratio and variously denoted sa/vol or SA:V, is the amount of surface area per unit volume of an object or collection of objects.

If volume is the amount of 3-D space contained by a closed surface (e.g. the amount of space within a given cube, or cylinder, or any other 3-D shape), liquid volume is a way to measure an amount of liquid by describing it how much 3-D space it occupies.

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Michaela spend the day at the lake with some friends. She spends some time exploring the lake as she looks around she notices that there are plants only in certain areas where would she see plants growing? Why?

Answers

Answer:

She would mostly see plants grow around the banks of the lake. In addition, she might see some plants growing in the lake. The plants are majorly aquatic plants. The ones on the banks are emergent plants because their roots are submerged in water and their foliage is above water. They grow on the shores because it shallow there. Free-floating aquatic plants may grow in the lake because they are suspended on the water surface with their roots just floating underneath the water surface.

What structure do white blood cells use to engulf bacteria when they do phagocytosis?
A. cilia

B. flagella

C. pseudopod

D. oral cavity

Answers

The engulfed object is thus enclosed within a membrane-bound vacuole called a phagosome. The phagocyte digests the ingested particle with hydrolytic enzymes, which are contained within membrane-enclosed sacs called lysosomes found within the cell.

list the resolving power range of naked eye, light microscope and an electron microscope​

Answers

Answer:

A scanning transmission electron microscope has achieved better than 50 pm resolution in annular dark-field imaging mode and magnifications of up to about 10,000,000× whereas most light microscopes are limited by diffraction to about 200 nm resolution and useful magnifications below 2000×.

How much energy is converted into chemical energy or heat when it transfers between trophic
levels?
A
90%
B. 50 %
C. 25%
D
10%

Answers

Answer:

I think the answer is D

Explanation:

explain the two inheritance patterns of blood type

Answers

Answer:

The ABO blood type is inherited in an autosomal codominant fashion.

The Rh system of blood groups determines the gene that forms two alleles: dominant (D) and recessive (d).

Explanation:

The dominant allele determines the synthesis of antigen D, so people with this antigen are referred to as Rh +. The recessive allele is dysfunctional so no D antigen is produced and individuals are Rh-

The ABO blood group system determines a gene that has three alleles:

A,  B, and O allele.

Alleles A and B are functional and determine the synthesis of certain antigens (agglutinogens A B) that are found on erythrocytes.

In this exercise we have to use the knowledge of blood to explain its inheritance factors, so we want to explain how:

So we know that blood types in addition to the types known as ABO, there is also the RH factor which is the biggest inheritance.

What are the 3 blood types?

Type A blood has A antigens, B blood has B antigens, AB blood has both antigens, and type O has neither. Red blood cells also have another type of antigen called RhD, which is part of a family made up of 61 Rh type antigens. When the blood has RhD, it is type positive.

Our blood group is inherited from both parents. Just as we are given physical characteristics like skin color or hair, we also inherit blood type. Surprising as it may seem, blood group is not genetically determined at birth according to the contributions of both parents.

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The days are longer or shorter because the earth’s axis in blank





PLEASE HELP ME

Answers

Answer: Orbit

Explanation: The Earth’s axis being in orbit means that the Earth is in different positions around the sun at different points in time, causing day and night.

Which is a reactant in the Calvin cycle?
A. Glucose
B. Oxygen
C. Carbon dioxide
D. Water

Answers

C. Carbon dioxide


The inputs are carbon dioxide from the air and the ATP and NADPH produced by the light reactions. The Calvin cycle uses carbon from the carbon dioxide, energy from the ATP, and high-energy electrons and hydrogen ions from the NADPH. The cycle's output is an energy-rich sugar molecule.

The reactant of the Calvin cycle is the carbon dioxide that is present in Option C, and the product of the Calvin cycle is glucose. The Calvin cycle takes place during the photosynthetic reaction.

What is the role of photosynthesis?

Photosynthesis is a process in which the plant plays an important role, such as when the plant absorbs the sun's light, water, and carbon dioxide and then produces oxygen and glucose by combining all of these elements; thus, glucose and oxygen are the products, and water and carbon dioxide are the reactants. The water is used in the light-dependent reaction and converted into oxygen as a product, while in the case of the Calvin cycle or the light-independent reaction, carbon dioxide is used as the reactant and the product that is formed is glucose.

Hence, the reactant of the Calvin cycle is the carbon dioxide that is present in Option C.

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what is the backbone of RNA made out of?​

Answers

Answer:

Explanation:

It has a deoxyribose and phosphate backbone having four distinct bases: thymine, adenine, cytosine, and guanine. Is a polymer with a ribose and phosphate backbone with four varying bases: uracil, cytosine, adenine, and guanine.

2. This body system sends out scouts to recognize pathogens such as
bacteria and viruses. Once identified, it produces antibodies to attack
and kill the pathogen. What body system is being described?
A-Immune
B-cardiovascular
C-muscular
D-digestive

Answers

The immune system helps to defend against bacteria and viruses.

Eukaryotic cell division requires?​

Answers

Answer:

Division of NucleusDivision of Cytoplasm

I hope this helps!

Answer:

Eukaryotic cell division requires?​, :   first they have too divide their nucleus, followed by dividing their cytoplasm, to complete the division of cells.

- hope this helps

by chance may I get brainliest

:)

Which of the following is NOT a function of the digestive system?
Delivers nutrients to the body’s cells
Breaks down food into nutrients the body can use
Absorbs nutrient molecules into the blood
Eliminates waste from the body
Please help I am doing a test.

Answers

Explanation:

Deliver nutrients to the body cells.

The __________ molecule is known as the universal energy source of the cell. *
1 point
Captionless Image
AMP
ATP
GTP
NADH

Answers

Answer:

The answer is ATP, however, NADH is part of what goes into producing ATP.

Happy holidays!

Why do people feel fireworks before hearing it?

Answers

Answer:

People feel fireworks before hearing it because light travels faster than sound.

Explanation:

We always see the colors of the fireworks before hearing their defeaning sounds. This is because light travels faster than sound, so we can see the light before hearing the sound. An example of this is seeing lightning before hearing thunder. When lightning strikes, the air around it moves very quickly, causing vibrations.

Hope this helps!

xoxo,

cafeology

Yogurt,cheese, and other foods are produced through alcoholic fermentation. True or false?

Answers

True these are both examples of food produced through alcoholic fermentation

True these are both examples of food produced through alcoholic fermentation.

What is Alcoholic fermentation?

The chemical reaction that produces alcohol is known as alcoholic fermentation. In essence, beer, wine, sake, and cider all begin with yeast eating a type of sugar, which is the basis for this process.

Even hard liquors, such as your preferred tequila, begin with a straightforward alcoholic fermentation.

Alcoholic fermentation produces three primary byproducts. Alcohol, which has historically been a crucial component of beer, wine, and hard cider, is one of them, which is not surprising.

Therefore, True these are both examples of food produced through alcoholic fermentation.

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Neurogenesis is especially evident in brain areas related to learning and memory. Based on this statement, you might expect neurogenesis to be particularly prevalent in the brain's:

Answers

Cortex, especially neo-cortex and pre frontal cortex. Where neuroplasticity can occur.

The chart shows codons and their corresponding amino acid. What amino acid is represented by the codon CAC

Answers

By looking at this chart you can see that the codon CAC codes for histidine

In some ecosystems each trophic level can supply only about 10% of its energy to the next
higher level. How much energy would be supplied to the second-level consumers in this energy
pyramid?
A. 50%
B. 10%
C. 1
D. 0.1%

Answers

Answer:

B

Explanation:

What do animal cells need to make energy?

Answers

Answer: Eating.

Explanation:

Animals obtain energy by eating plants or animals. The only form of energy a cell can use is a molecule called adenosine triphosphate (ATP). Chemical energy is stored in the bonds that hold the molecule together. ADP can be recycled into ATP when more energy becomes available.

Answer:

Food

Explanation:

Animals obtain energy when they eat. So do we, because we have animal cells! If you don't eat you will get weak and your body needs the nutrients that it gets from the food that you eat. So to make adenosine triphosphate (ATP), you need energy and some other factors that go into making ATP.. but that is the just of it.

You need food.

Hope this helps!

What is the building block of all living things?

Answers

Answer:

cell

Explanation:

is a building block of living things


What do aerobic and anaerobic mean and which one is cellular respiration?

Answers

Cellular respiration can be aerobic or anaerobic, but normally when people say cellular respiration they mean AEROBIC respiration. Aerobic means oxygen is needed while anaerobic means oxygen is not needed

5. Studying light from a star allows us to… a. determine a star's temperature b. determine what elements the star is made of c. determine how a star is moving (toward, away, fast, slow) d. all of these e. none of these

Answers

Answer:

The correct answer is option C "determine how a star is moving (toward, away, fast, slow)"

Explanation:

All realized components emanate and assimilate specific frequencies of light, which is important for the electromagnetic range. By considering the frequencies of light (as demonstrated by 'lines' inside the electromagnetic range) discharged by an object in space, astronomers can get a scope of information.

One thing they look at is the adjustment in situation of lines in the range from a star this can tell astronomers the distance away the star is, regardless of whether it is moving towards or away from us and how quick it is moving.

what is sex explain the procedure​

Answers

Answer:

It’s where you get a girl and boy together then they have sex

Explanation:

HURRYYYYYY!!!!!!!!!!!!!!! ¡!!!!!!!?!!?!?!!?!?!?!??!?!!?


What are the conditions for exponential growth?

Answers

Answer:

The rate becomes ever more rapid in proportion to the growing total number or size.

Explanation:

Answer:Exponential growth may occur in environments where there are few individuals and plentiful resources, but when the number of individuals becomes large enough, resources will be depleted, slowing the growth rate. Eventually, the growth rate will plateau or level off.

Explanation:

What is the cell nucleus?

Answers

Answer:

The nucleus in a cell is like a brain in a human. It is the power house. The nucleus tells everything in the cell what to do and when to do it.

Explanation:

Answer:the nucleus is an organelle found in eukaryotic cells. The nucleus hold most of the genetic material from the cell.

Explanation:

If a crocodile encountered a pod of dolphins in the sea, what would happen?

Answers

Answer:

The thing that would most likely happen is that the dolphins would be attacked.

Explanation:

Many small freshwater organisms have a structure called a contractile vacuole, which pumps water out their body. Explain how this process is an example of active transport.

Answers

Answer:

1: The process of osmosis would cause water to move into the cells causing them to swell and possibly burst. Many freshwater one celled organisms have structures called contractile vacuoles. These structures collect and pump out excess water that accumulates in the cell.

2: During active transport, a protein pump uses energy, in the form of ATP, to move molecules from an area of low concentration to an area of high concentration. An example of active transport is the sodium-potassium pump, which moves sodium ions to the outside of the cell and potassium ions to the inside of the cell.

Explanation:

Question:
Explain what monsoons are, where they are often found and what impact they have on
You must use complete sentences when answering this question
emironmemt

Answers

Answer:

i have this question too

Explanation:

1. Animals can face many problems caused by light pollution. Which is NOT one of these
problems?
a. Increased predation
b. Decreased amount of food
c. Disorientation
d. Disrupted breeding times

Answers

Answer:

Light pollution does not affect predation levels, so the correct answer is A

Explanation:

Increase predation is one of them which is not affected by Light pollution.

What is light pollution?Artificial illumination that is undesirable, improper, or excessive is referred to as light pollution.Light pollution, also known as artificial light at night, is the excessive or inefficient use of artificial outdoor light that disturbs wildlife's normal routines, adds to the buildup of carbon dioxide (CO2) in the atmosphere, interrupts human sleep, and obscures the night sky's stars.What is predation?One creature kills and eats another in predation. Predation offers energy to the creature that kills, the predator, in order to prolong its life and encourage reproduction at the expense of the organism that is eaten, the prey. Predation has an ecological impact on species on two levels.

Hence, the correct option is A.

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