4- Jamie does an experiment. She charges a pencil by rubbing it with a piece
of silk. Jamie finds that she can use the pencil to attract the silk. Why does
the attraction occur?

Answers

Answer 1

Answer:

More info given below.

Explanation:

This attraction occurs as a result of static charge. You see an atom is referred to as the smallest particle of a substance; and when an atom gains or looses electrons it becomes unstable creating a difference in potential. However in this case rubbing induces friction which induces heat. This heat excites the atom to loose electrons creating a negative charge on the silk and a converse positive charge on the pencil.


Related Questions

Competition can affect a population size?
A. True
B. False

Answers

Answer:

True

Explanation:

Competition limits population size. Imagine 7 animals fighting over 2 meals. This creates competition and some will not be fed.

Human blood consist of blood groups A, B, & O. However, there is one more blood group, AB, which contains alleles A and B in the same genotype. What is this phenomenon called?

Answers

Answer:

codominant inheritance

Explanation:

edge

What are the similarities between parents and offsprings

Answers

Parents give half of their genes to their offspring that is why their offspring has some features from their dad and some from their mom

The movement of soil from one place to another place is called? ANSWER: GLACIATION, DEPLETION, or EROSION

Answers

Answer:

¿cual es la influencia que tiene la

Starting today, many restrictions are being lifted. Is the pandemic over? Explain.

Answers

Answer: The pandemic is not over at all. Cases are increasing rapidly and yet there is still no known cure.

Explanation:

which type of plant would likely be more successful at producing offspring that would develop into new plants
A) Corn
B) Teosinte​

Answers

Answer:

B

Because it has more seeds that have a 65-80 percentage of becoming plants.

Answer:

Corn

Explanation:

Corn is proverbially common in most part of the world than Teosinte which is ancestral to Corn. Teosinte is common to Mexico and Central America.

Skin color, fur color, and height are examples of which inheritance pattern?

A. Mendelian inheritance
B. incomplete dominance
C. codominance
D. polygenic inheritance

Answers

Answer:

D

Explanation:

Skin color, fur color, and height are examples of polygenic inheritance. Thus option D is correct.

What is polygenic inheritance?

Polygenic inheritance is defined as a type of heredity where the trait is created by the interactions of many genes, as opposed to monogenic inheritance where the phenotype is created by the expression of just one gene.

When numerous separate genes have an additive or comparable effect on a single quantitative characteristic, this is known as polygenic inheritance.

Multiple gene or multiple factor inheritance are other names for polygenic inheritance.

The some of the characteristics are since epistasis is not at play, the expression of one gene is not obscured by the existence of the other genes. There are no dominant or veiled genes; the gene involved in polygenic inheritance is either contributing or non-contributing.

Thus, skin color, fur color, and height are examples of polygenic inheritance. Thus option D is correct.

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Sound travels as mechanical waves.

How does light travel?


as mechanical waves


as magnetic beams in a medium


as surface waves


as electromagnetic waves

Answers

Answer:

Light travels as a surface wave

Explanation:

Answer:

it's electronic waves

Explanation:

i took the test and it said that it was electronic waves not surface waves

PLEASE HELP ME WITH WITH ASAP!


which statement is true regarding the energy and wavelength of the waves in the electromagnetic spectrum? A The wavelength gets longer and the energy increases. B The wavelength gets longer and the energy decreases. C The wavelength gets shorter and the energy increases. D The wavelength gets shorter and the energy decreases.

Answers

Answer:

The answer should be letter D

Explanation:

A. 25%
B. 50%
C. 75%
D. 100%

Answers

The Answer is A

Hope this helps

What is it about the structure of the alveolar-capillary unit that makes diffusion possible? Select all that apply.The capillaries are large. The cell wall of the alveoli is thin. Many capillaries surround one alveoli sac. There is always low pressure in the alveolar-capillary unit. The alveolar-capillary unit provides a large surface area.

Answers

Answer:

The most successful option would be: Many capillaries surround a sac.

Explanation:

Although in this question, I wanted to tell you that among all the options that is the most correct, but it is incomplete.

The capillaries that are in the alveolar unit are not only in great numbers to ensure gas diffusion but they are also SINUSOID capillaries where the cells of these capillaries do not have tight cell junctions, and there is a micrespace between cell and cell that forms the capillary wall.

And why is this? Because the greater the permeability of the capillary, the better the process of gas homeostasis or gas exchange at the alveolar level will be favored.

I hope I have completed your question, because it is very important that you know this, they are not simple capillaries that are only increased in number, but their sinusoidal permeable form makes them fulfill a VITAL function for the human being, this does not mean that all the capillaries of the body are like this, do not forget that we are speaking on time of the socket.

Answer:

B. The cell wall of the alveoli is thin

E. The alveolar-capillary unit provides a large surface area

Cattle live in an area where the streams are dry. For which basic need do these cattle most likely compete?

a food
b shelter
c water
d energy

Answers

Answer:

c

Explanation:

Competition for water is likely to be more important to the cattle than competition for food, shelter, or energy, as these other needs can typically be met through other means. Therefore,option (C) is correct.

Why cattle need water to survive?

Cattle, like all living organisms, require a consistent supply of water in order to survive. In the passage, it is mentioned that the streams in the cattle's area are dry, which means that there may be limited access to water in this area. Cattle, also known as cows or bovines, are large, hoofed mammals that are domesticated for their milk, meat, leather, and other products. They are typically raised on farms or ranches, and are known for their docile and gentle nature. Cattle are herbivores, and are typically fed a diet of grass, hay, and other plant materials

As a result, the cattle may have to compete with one another for access to water, as it is a basic necessity for survival. In this situation, competition for water is likely to be more important to the cattle than competition for food, shelter, or energy, as these other needs can typically be met through other means.

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Why testes is extra abdominal in position in man ?​

Answers

Extra-abdominal position means that the testes hang outside the abdomen and are not in it. This is important because the sperms in the testes are very susceptible to high temperatures - meaning that they can easily die due to high temperatures like what we have within the abdomen

Who is given credit for the basic design of the periodic table of the elements?


John Dalton


Gregor Mendel


Dmitri Mendeleev


Ernest Rutherford

Answers

Answer:

the answer is C Dmitri Mendeleev

Explanation:

Plants obtain their organic nutrients (carbon, hydrogen, and oxygen) by:


ingesting food

photosynthesis

fermentation

chemosynthesis

Answers

Answer:

photosynthesis

Explanation:

plants can absorb most if not al of the things through their leaves alone to get organic nutrients. The roots are for more less organic nutrients like fertilizer etc...

Answer:

photosynthesis

Explanation:

photosynthesis literally be like:

HEY YOU CO2 ! YEA YOU! come 'ere litle guy. let's brEAK U APART, SHALL WE? there u go, broken into carbons...

what forces cause surface ocean circulation? what forces cause deep water circulation?

Answers

Answer:

ANS 1) Ocean currents can be caused by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes or storms. Currents are cohesive streams of seawater that circulate through the ocean.

ANS 2)n the deep ocean, the predominant driving force is differences in density, caused by salinity and temperature variations (increasing salinity and lowering the temperature of a fluid both increase its density). There is often confusion over the components of the circulation that are wind and density driven.

HOPE IT HELPS : D PLEASE MARK ME BRAINLIEST

Explanation:

how is a food web different from a food chain

A. Food webs contains only producers not consumers
B. Food webs do not include decomposers
C. Food webs exist in aquatic environments food chains exist in terrestrial environments
D. Food webs contain many different linked food chains​

Answers

Answer:

D. Food webs contain many different linked food chains​

Explanation:

Select the correct answer.
Which of the following is the correct definition of a biography?
OA
an account of a fictitious experience that relies on figurative language
B.
an account of a single significant experience in a person's life
C.
an account of somebody's life written by that person
D.
an account of somebody's life written or produced by another person
Reset
Next

Answers

Answer:

D.

an account of somebody's life written or produced by another person

. Which is NOT a function of the skeletal system? a. defense b. movement c. protection d. storage

Answers

Storage is not a function

This illustration shows a strand of mRNA and the complimentary tRNA molecules that can base pair with the mRNA codons. What is the correct sequence of amino acids?

Answers

Answer:

Since you haven't attached the illustration for finding out the amino acid sequence from the mRNA sequence from, I'll explain the general principle for it.

The mRNA represents the code for translation into specific amino acids which will form the protein. A group of three bases, a triplet code, is referred to as a codon. The tRNA is responsible for recognizing the codon and matching the anticodon that will attach to the mRNA and generate the chain of appropriate amino acids.

Hope that answers the question, have a great day!

What are the basic building blocks of all living organisms ?

Answers

Answer:

pretty sure it Legos

Explanation:

Jk lolol its Cells. hope this helps!!

Answer:

A cell is the smallest unit of a living thing. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the basic building blocks of all organisms.

Explanation:

Which of the following symbiotic relationships is considered parasitic?
A. Tapeworm in an intestinal tract
B. Bees transporting pollen from flowers
C. Pilot fish swimming under sharks
D. Birds eating the insects from the back of a hippopotamus

Answers

Answer:

A. Tapeworm in an intestinal tract.

Explanation:

This symbiotic relationship is parasitic because the tapeworm causes harm to the host. Tapeworms feed off the nutrients the host consumes, thus making the host sick.

Not parasitic:

Bees transport pollen from flowers back to the nest to feed the young bees, but pollinate female flowers as well which keeps the flower population alive.

Pilot fish swim under sharks to keep other prey from eating them, and the shark do not eat eat the pilot fish.

Birds eating the insect of the back of a hippopotamus keep the hippo clean and parasite-free as well as feeding the birds.

The presence of tapeworm in intestinal tract is considered parasitic. Thus, the correct option is A.

Symbiotic relationships refers to the association between two two organisms belonging to different species. There are three types of symbiotic relationships which are mutualism, commensalism and parasitism.

In mutualism, both of the organisms involved are benefited from the relation.

In commensalism, one of the organisms involved is benefited and the other is neither benefited nor harmed from the association.

In parasitism, one of the organisms involved is benefitted and the other one is harmed from the association.

As in the relationship between tapeworm and human, tapeworm is benefited but the human involved is harmed. Thus, it is a parasitic relation.

Thus, the correct option is A.

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it's a gizmo for rainfall and bird beaks​

Answers

Answer:

9.9mm

Explanation:

How many days in a year ?

Answers

Answer:

365 days

Explanation:

Answer:

365

Explanation:

There a 365 days in one year :)

Both parents can roll their tongue, yet their child cannot. What must the parent's
genotype be?
A. Parents must both be homozygous dominant
B. Parents must both be homozygous recessive
C. Parents must both be heterozygous
D. IDK​

Answers

The answer is C Heterozygous

Explanation: the inability to roll your tongue is a recessive trait. Since both parents are heterozygous, they carry that recessive gene, so their child will have a 25% chance of having that recessive trait; and therefore, unable to roll their tongue.

answer this question

Answers

technically its not even a question but idk. whats up?

What is the weather like in Tropical rainforests?

Answers

Answer:

A tropical rainforest climate is typically hot, very humid, and wet.

Explanation:

What are the key features of a tundra?

A. cold winter, thin acidic soil, evergreen trees

B. many evergreen trees, short moist summers, long snowy winters

C. long cool summers, short dark winters, migrating animals

D. treeless, permafrost, cold dark winters

Answers

Answer:

D. treeless, permafrost, cold dark winters

Explanation:

The correct answer would be D

Tundra is a habitat in which tree growth is hampered by cold temperatures and short growing seasons. Therefore, option (D) is correct.

What is a tundra?

The freezing temperatures and short growing seasons of a tundra biome make it difficult for trees to develop in this sort of ecosystem.



Most of the time, it is cold, but in the summer, it can get quite warm. The winters on the tundra are long, dark, and very cold. For six to ten months of the year, temperatures are below 0 degrees Celsius. Because the temperatures are so low, there is a layer of frost below the surface. This is a layer of frozen ground.

Arctic tundra is found above the Arctic Circle in Alaska, Canada, Russia, Greenland, Iceland, and Scandinavia, or in Antarctica. Alpine tundra are high on mountains where nightly temperatures are below freezing.

Therefore, option (D) is correct.

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Which is a sustainable practice?

A. Wind farms
B. Clear cutting
C. Flood irrigation
D. Overfishing

Answers

Answer:

A. wind farms

Answer:

Wind farms

Explanation:

2. Most male crickets produce a mating song by rubbing together their curved
wings. In a certain geographic area, parasitic flies detected male crickets singing
and deposited their larvae into them, which killed the crickets. Eighteen
generations later, the number of males with flat wings has increased to 90%. The
flat-winged crickets do not sing, but are still able to mate with females, and
parasitic flies cannot detect them. Which type of selection is occurring in this
cricket population?
O
Artificial
O
Directional
O
Disruptive
O
Stabilizing

Answers

Directional selection, as one phenotype is greatly favored over another
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