Which of the following is a contact force? Electrical force Frictional force Gravitational force Magnetic force

Answers

Answer 1

Answer: Frictional Force

Explanation: Friction always acts to oppose any relative motion between surfaces. For the simple example of a book resting on a flat table, the frictional force is zero.

Answer 2

Answer:

Frictonal Force.

Sorta-Explanation:

The contact forces are Frictional, Normal, and Applied. The non-contact are Magnetic, Gravitational, and Electrical.


Related Questions

Preserving _______ ecosystems can improve water quality, limit flood damages, and recharge the groundwater in a watershed.
A. agricultural
B. wetland
C. desert
D. forest

Answers

Answer:

D. forest

Explanation:

Forests play a vital role in soil health and water quality. Not only do they act as anchors for the loose soil, they are also living filtering mechanisms. Without trees, during heavy rainfall, the amount of water will exceed the soil's capacity to absorb it. Thus, this excess will run off collecting not only soil particles (which leads to soil erosion), but also chemicals and pollutants. All this will end up in streams and rivers and thus affect aquatic ecosystems and water quality. These water sources will in turn cause floods that can inflict heavy damages.

A forest canopy will limit the amount of water that reaches the soil. Furthermore, large amounts of water are absorbed by trees on a daily basis. With this water, any pollutants or excess nutrients due to human activity are absorbed and stored inside the trees. Thus, trees play a vital role for the natural circulation and filtration of water.

Answer:

B

Explanation:

Just did it and got it wrong :')

Btw here is the explanation for reals: A watershed is the land that water flows across or through on its way to a stream, lake, wetland, or other body of water. A wetland is an area that is permanently or periodically flooded with water and contains organisms that have adapted to these conditions.

Wetland ecosystems can benefit a watershed by improving water quality by removing pollution and retaining excess nutrients. Wetland ecosystems can also reduce floods by holding water during the rainy season and releasing it at drier times. Water seeps out of wetlands and recharges the watershed's groundwater.

mtDNA is transferred along material lineage

Answers

Answer:

True

Explanation:

mtDNA is passed from mother to child.

The asnwer is true....

what organic compound in Genes is specifically Designed for this task
Proteins
Enzymes
Lipids
Nucleic acids​

Answers

Nucleic acids

Answer: last choice

pro life what is it​

Answers

Answer:

opposing abortion and euthanasia.

Explanation:

supporting the belief that it is immoral for a pregnant woman to have the freedom to choose to have an abortion (= an operation to end a pregnancy) if she does not want to have a baby

Which of the following gases , released by ruminant animals and termites as a waste product of digestion , can add to global warming ??
A. Carbon dioxide (co2)
B. Methane (CH2)
C. Chlorofluorocarbon (CFC)
D. Nitrogen (n2)

Answers

B. Methane (Ch2) is released by animals and contributes to global warming

Final answer:

Methane (CH4) is released by ruminant animals and termites as a waste product of digestion. It is produced through a process known as enteric fermentation and cellulose decomposition, respectively. This potent greenhouse gas absorbs heat in the atmosphere, contributing to global warming.

Explanation:

The ruminant animals and termites release the gas called methane (CH4), not CH2 as a waste product of digestion. Methane is a potent greenhouse gas that can contribute to global warming. When methane is released into the atmosphere, it absorbs the sun's heat, warming the atmosphere. This is known as the greenhouse effect, and it is a significant contributor to global warming.

Ruminant animals, such as cows, sheep, and goats, produce methane through a process of enteric fermentation. In their stomachs, microorganisms break down carbohydrates into simpler molecules, which produce methane as a byproduct. This methane is then exhaled or belched out by the animal.

Similar to ruminants, termites also generate methane. They produce methane in their gut, as they are decomposing cellulose from the wood materials they are eating. The microbiota in their gut produces methane gas as a metabolic byproduct, which is then released into the atmosphere.

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The observed redshifts of galaxies are evidence for the Big Bang theory of the origin of the universe, because they indicate that
A) the galaxies are still very hot.
B) the galaxies cannot be seen from the other side.
C) the galaxies are moving rapidly away in all directions.
D) the galaxies turned red at the original moment of explosion.

Answers

Answer:

C

Explanation:

things are moving in space, proving that since the big bang, planets and galaxies have formed and are expanding and others are forming. A red light trace shows when something is moving away, versus a blue light trace when it is coming closer. Things are ever moving in the universe.

Why does a temperature inversion trap smog and prevent it from dispersing

Answers

Answer:

convection is less effective because the air above is already warmer, and so there is less mixing of air between altitudes. Since pollution is generally produced at ground level, temperature inversions can trap the pollution (e.g. smog) at ground level.

Explanation:

Answer:

This means that convection is less effective because the air above is already warmer, and so there is less mixing of air between altitudes. Since pollution is generally produced at ground level, temperature inversions can trap the pollution (e.g. smog) at ground level.

Explanation:

Dale makes a model of part of an elemental solid by attaching balls to each other with rods. His model looks something like the following image:

How could Dale improve his mode

 A. 

by using springs instead of rods to allow the model atoms to vibrate in their positions

 B. 

by using strings instead of rods to allow the model atoms to move more freely

 C. 

by using different sizes of balls to represent different kinds of atoms

 D. 

by using cotton balls instead of hard balls to allow the model atoms to change size

Answers

Answer:

by using springs instead of rods to allow the model atoms to vibrate in their positions

Explanation:i got it correct

Answer: Option A

Explanation:

The strong inter molecular forces that is found in solids does not allows the atoms to move out of the solid but it allows them to vibrate on its position.

The atoms in the solid are joined together by strong inter molecular forces that does not allows the atoms to move out of the bond but due to kinetic energy the atoms keeps them vibrating even if they remain in their position.

Hence, the correct answer is option A because the model must have been substituted with a spring inspite of rods.

James wants to create a self-sustaining ecosystem, or vivarium. Which method would most likely result in an ecosystem that
is viable for the longest amount of time with no additional care?
A:Put a few plants, water, sand, and a heat lamp inside a clear glass aquarium and seal the top. Place it in a sunny location.
B:Put water, fertilizer, soil, plants and insects in an open, clear glass aquarium. Place it in an area that has some sunlight
and some shade
C: Put rocks, water, and many plants in an open, dark-colored plastic tub. Place it in an area with direct sunlight.
D:Put soil, water, many plants, and a few insects in a sealed, clear plastic aquarium. Place it in an area with indirect sunlight

Answers

Answer:

D

Explanation:

Did the T. Rex have an amniotic egg?

A. Probably not because their is no history Of closely related animals having an amniotic egg.

B. It is quite likely because lots of animals in the past have had amniotic eggs, so the T. Rex probably did too.

C. It is quite likely because both the caiman and parrot have had amniotic eggs and they share recent common ancestor with the T. Rex.

D. Probably not because the T. Rex is no longer living.


I’m failing biology, help a girl out!

Answers

I know that It has an amniotic egg so It is either B or C

Final answer:

The T. Rex most likely had an amniotic egg, as it is a characteristic of amniotes. Close relatives of the T. Rex, like the caiman and parrot, have had amniotic eggs, indicating that the T. Rex probably had them too.

Explanation:

The T. Rex most likely had an amniotic egg. Amniotic eggs are a characteristic of amniotes, which include reptiles, birds, and mammals. The evolution of amniotic eggs allowed for the development of embryos within an aquatic environment inside the egg, which reduced the dependence on a water environment for development. Although the T. Rex is no longer living, its close relatives, such as the caiman and parrot, have had amniotic eggs, indicating that the T. Rex probably had them as well.

Some bed bugs had mutations in their genetic code which allowed them to survive the chemical pesticide and they produced chemically resistant offspring. How can this be explained?

Answers

Answer:

Random mutations led to evolution of pesticide resistance genes in bed bugs.

Explanation:

Random mutations in genome of bed bug imparted them the pesticide resistance. Since the bed bugs having the mutation of pesticide resistance were able to survive under presence of pesticides, this variation was favored by natural selection. The bugs with pesticide resistance transmitted this trait to their progeny. In time, the bed bug population consisted of most of the bugs having the pesticide resistance.

Answer:

The answer is D

Explanation:

A population of peppered moths is monitored over several generations. It is observed that the number of white moths compared to the number of black moths changes with each successive generation. This means that the population cannot be at equilibrium and the population is therefore evolving.

True
or
False

Answers

Answer:

True

Explanation:

Evolution is the change in the characteristics of a population over generations. This is caused by nature selecting out some disadvantageous traits and preserving advantageous traits over successive generations through natural selection pressures. In this case, the white moth is at a disadvantage in the environment compared to the black moth. The allele for white color is, therefore, ‘weeded out’ over time.



Both Malik's parents have type A blood (IAi). Which of the following statements is true?
A. Malik can only have type A blood.
B. Malik has a 50 percent chance of having type AB blood.
C.Malik has a 25 percent chance of being homozygous for blood type.
D. Malik has a 75 percent chance of having the same blood type as his parents.

Answers

Answer: D

Explanation:

which of the following statements is true about the nature of light?
A. light behaves entirely as a particle
B. light has properties of both particles and waves
C. light behaves entirely as a wave
D. light travels as a wave but does not carry energy

Answers

Answer:

B

Explanation:

Light shows duality i.e it shows properties of both particle as well as wave.

Answer:

Option (B).

Explanation:

Light may be defined as the form of energy and electromagnetic radiation and marks the visible spectrum. The speed of the light in the vacuum is 3 × 10^8m/s.

The main source of the light in the earth is sun. Light shows the dual property. This means that light has both the properties as it can acts as particle as well as the wave.

Thus, the correct answer is option (B).

The image shows a type of stress.

Which type of fault occurs when rock is subjected to this type of stress?

hanging

normal

reverse

strike-slip

Answers

Answer:

Option C, Reverse

Explanation:

A reverse fault is one in which compression force squeezes the rock crust into small space due to which the hanging wall will push up to a higher level as compared to a footwall. Here in this image none of the block is pulled away or forced towards the other. However, the rock has broken due to the application of compressive force which will now tend to create a reverse fault

Hence, option C is correct

Answer:

The correct answer is "normal"

Explanation:

Edge 2020

Which MOST LIKELY represents the gas being released and the process used to make it?

Answers

I believe that the gas is Carbon dioxide and that it is being released by respiration.

The gas being released is carbon dioxide and in the process called cellular respiration.

In apparatus set up by the students, the yeast used the sugar in the apple juice together with the oxygen to generate adenosine triphosphate (ATP) and releases carbon dioxide as a waste.

Further Explanation

Yeast is a one-celled organism that requires energy to survive. Yeast can do anaerobic and aerobic respiration. For yeast to survive, it has to make its energy.

To survive, yeast uses cellular respiration, where glucose is transformed into ATP and carbon dioxide.

In other words, cellular respiration is a metabolic process that involves the breaking down of glucose to generate adenosine triphosphate (ATP) and releases waste products. The waste product is carbon dioxide (C02)

Cellular respiration is used by both plants and animals to break down sugar and convert it into energy. The energy produced is used by plants and animals to carry out some task at the cellular level. The essence of cellular respiration is to provide the energy required for cells to function.

Therefore, in the apparatus set up by the students, the yeast used the sugar in the apple juice together with the oxygen to produce adenosine triphosphate (ATP) and discharges carbon dioxide as a by-product.

LEARN MORE:

Which MOST LIKELY represents the gas being released and the process used to make it? https://brainly.com/question/10273602 Two students set up the following apparatus in a lab: a pipette was filled with a mixture of yeast and apple juice and inverted in a test tube filled with warm water https://brainly.com/question/6750753

KEYWORDS:

carbon dioxidecellular respirationgaspipetteATPby-products

Julie’s town uses single-stream recycling, so Julie puts all of her household recyclables in a single container to be picked up. The recycling plant must sort out the different materials, including paper, cardboard, different types of plastic, glass bottles and jars, aluminum drink cans, and steel food cans.

How would an electromagnet be used in this type of recycling plant?

to remove plastic bottles from glass bottles
to divide food cans from soft-drink cans
to separate paper from cardboard
to gather colored glass from colorless glass

Answers

Answer:

to divide food cans from soft-drink cans      

Explanation:

An electromagnet is based on the principle that current through a coil produces magnetic field. Magnetic objects such as Iron, nickel, cobalt or objects made from their combination are attracted by the magnet. This property is used to separate materials in recycling plant.

Steel (alloy of iron)  would be attracted by the magnet where as aluminium would not be. Thus, steel food cans can be separated from the aluminium soft-drink cans using an electromagnet.

Answer:

B

Explanation:

bc


Which property of gold is NOT a reason why gold is often used to make metals?
A. rare
B. malleable
C. corrosion resistant
D. good conductor of electricity

Answers

Answer: The answer is A. rare

Explanation:

Hope this helps

The answer will be A as the other guy said.

The explanation is just because gold is rare doesn’t mean it won’t be made into metals.

Which organelle moves substance

Answers

Answer:

Golgi bodies

Explanation:

This is the organelle that is responsible for the packaging and sending of needed nutrients in and out of the cell through the cell membrane

_______ physically links the amino acid with the transcribed mRNA.

Answers

Answer:

tRNA

Explanation:

tRNA physically links the amino acid with the transcibed mRNA.

Transfer RNA  physically links the amino acid with the transcribed mRNA.

What is tRNA?

Transfer RNA (abbreviated tRNA) is a small RNA molecule that plays a key role in protein synthesis.

What is the function of mRNA and tRNA?

Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts. ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place).

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Which type of rock forms deepest inside earth ?

Answers

igneous rock forms deepest in the earth

Answer:

igneous rock

have a nice day.

The average kinetic energy of the particles in an object is directly proportional to its
A) heat.
B) volume.
C) temperature.
Eliminate
D) potential energy.

Answers

C. Temperature is your answer

Answer:

correct answer is c. temperature

Explanation:

Rising levels of carbon dioxide most likely

Answers

Answer: Have a greater detrimental effect on the sea than the land is right answer.

Explanation:

Lucy believes she has developed a new way to turn old shoes into automobile fuel. She has done all the research and compiled her findings into a scientific paper. She wants to get this information accepted by the scientific community before someone else comes up with the idea. Which of these would be the LEAST EFFECTIVE method for Lucy to utilize current technology to communicate her research findings?

A) submit and publish her results in online, scientific journals

B) use the postal service to send out flyers to random households

C) e-mail specific companies who might be interested in her new discovery

D) post her results and findings to scientifically-specific Internet blogs

Answers

B is obviously the correct answer :)

Sending flyers to targeted neighborhoods informs potential customers that  company is open for business and prepared to help. Because it's illegal to stuff a flyer into a mailbox without postage. Thus, option B is correct.

What is postal service?

A system for moving postcards, letters, and packages physically is known as the mail or post. Although many governments impose limitations on private systems, postal services can be either public or private.

A postal service is a mechanism for transferring mail (letters and packages) between locations. Nowadays, almost anywhere in the world can receive mail.

Mail is delivered by truck, train, ship, or airplane by postal personnel. Mail can also go between nations thanks to cooperation among postal systems worldwide.

Letter carriers deliver the mail to each address at the final location. Numerous mail couriers commute on foot or in little mail trucks.

Therefore, use of  postal service to send out flyers to random households.

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What process in human body cells transfers the energy stored in a grilled cheese sandwich to ATP?

Answers

Answer:

Cellular Respiration

Explanation:

Final answer:

The energy from a grilled cheese sandwich is transferred to ATP through the process of cellular respiration, specifically oxidative phosphorylation.

Explanation:

Every cell in the human body uses adenosine triphosphate (ATP) to store and release energy. The energy from a grilled cheese sandwich is transferred to ATP through the process of cellular respiration, specifically oxidative phosphorylation. In this process, the energy stored in the chemical bonds of glucose from the sandwich is released and used to generate ATP molecules.

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A population of tree-climbing lizard live on one bank of a large river. The other bank of the river is a treeless prairie. During a flood, 40 lizards were transferred to the prairie side of the river. After 200 generations, this transferred population of lizard lost the ability to climb. Which mechanism is MOST likely responsible for this loss of function within the transferred population?
A) mutation
B) genetic drift
C) natural selection
D) gene flow

Answers

Final answer:

Genetic drift is the most likely mechanism responsible for the loss of climbing ability within the transferred population of lizards. So, the correct answer for the question is option (B) Genetic drift.

Explanation:

The mechanism most likely responsible for the loss of climbing ability within the transferred population of lizards is genetic drift. Genetic drift is a random and uncontrollable process in which certain individuals leave more offspring than others due to chance. In this case, the 40 lizards transferred to the prairie side of the river experienced genetic drift over 200 generations, leading to the loss of the climbing ability trait.

How are Venus and Uranus similar?

They both rotate backwards.
They both have rings.
Neither planet has any satellites.
Both planets have extreme axial tilts.

Answers

Answer:

They both have rings

Explanation:

Uranus  

retrograde rotation

almost horizontal axial tilt

first planet discovered using telescope

faint bands and thin rings

Neptune    

blue color from methane

last planet in solar system

discovered using mathematical calculations

thin rings

Answer:

They both rotate backwards

Explanation:

I just did the assignment

What type of thunderstorm is depicted in the radar illustration above?

A. Multicell line
B. Tornado
C. Single-cell thunderstorm
D. Supercell

B: is not correct, pick from A,C, or D. Please try to give a good answer and not a guess.

Answers

Answer:

super cell thunder storm

The type of thunderstorm depicted in the radar illustration is a super-cell thunderstorm.

Supercell thunderstorm rotates updraft:

A supercell thunderstorm is a type of thunderstorm that is deep and rotates updraft. It is also known as a rotating thunderstorm. They are most dangerous. The four types of super cell thunderstorms include classic, high precipitation, low precipitation, and miniature.

So, the thunderstorm shown in the image is a supercell thunderstorm.

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Why is it important to classify the millions of species on earth?

Answers

to organize them and speak about them accurately is correct.

incorrect  answers

to have common names that everyone can remember

to more easily sequence their genetic material

to create scientific names that only scientists can learn

Answer:

its d

Explanation:

Which is not a property of water?

Select one:
a. good solvent for electrolytes
b. high specific heat
c. adheres to polar compounds
d. contracts during freezing

Answers

d. Because when liquid water becomes solid ice, it expands, not contracts.

Water contract during freezing is not a property of water.

Option D

Explanation:

The water at normal temperature is fluid in nature where the disorder in the structure is due to the hydrogen bond between the molecules of water which are continuously forming with one molecule and then again forming with another molecule.

When the water freezes then due to low temperature the energy of the system is lost due to which vibration between the element is also reduced and hydrogen bonds no longer change. At this time the fixed hydrogen bond causes the molecules of water to expand which further decreases the density of water.

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