Why does sound need a medium to
travel?
A. The particles transfer energy through direct contact.
B. The particles slow down.
C. Empty space makes the sound travel faster.
D. Sound does not need a medium to travel.

Answers

Answer 1

Answer:

A. the particles transfer energy through direct contact

Explanation:

Answer 2
The answer would be A, the particles transfer energy through direct contact.

Related Questions

Why are solutions to climate change so hard to put in practice?

Answers

Explanation:

This has put huge stresses on a range of natural systems, including the atmosphere[3],. The increase in the use of fossil fuels has been even greater than the increase in industrial activity. ... The characteristics of the systems that have led to these changes also make the problems hard to address

Climate change, unlike other policies, is cumulative. The more we delay to address it, the larger the problem grows and the more difficult it becomes to solve, feeding a feedback loop that makes solutions ever more difficult.

What is climate change?

Long-term changes in temperature and weather patterns are referred to as climate change. These changes could be natural, such as oscillations in the solar cycle. However, since the 1800s, human activities have been the primary cause of climate change, owing mostly to the use of fossil fuels such as coal, oil, and gas.

Climate change has three impediments:

climate change denial, the economics of lowering greenhouse-gas (GHG) emissions, andthe politics of mitigation strategies.

Therefore, solutions to climate change are so difficult to put in practice.

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When did the Tour de France start?

Answers

Answer:

July 1, 1903

Explanation:

The Tour de France is an annual men's multiple stage bicycle race primarily held in France, while also occasionally passing through nearby countries. Like the other Grand Tours, it consists of 21 day-long stages over the course of 23 days

~Hope this helps

Answer:

[tex] \huge \fbox \colorbox{red}{✍Answer}[/tex]

[tex]\tt \underline \green{1 \: July \: 1903} \\ [/tex]

Triangle LMN is similar to triangle OPQ. Find the measure of side OP. Round

your answer to the nearest tenth if necessary.

Answers

Answer:

[tex]OP = 8.2[/tex]

Explanation:

Given

See attachment for triangles

Required

Find OP

To solve for OP, we make use of the following equivalent ratios

[tex]NL:LM=QO:OP[/tex]

From the attached triangles

[tex]NL = 47[/tex]

[tex]LM = 35[/tex]

[tex]QO = 11[/tex]

So, we have:

[tex]47 : 35 = 11 : OP[/tex]

Express as fraction

[tex]\frac{47 }{ 35 }= \frac{11 }{ OP}[/tex]

Cross Multiply

[tex]47 * OP = 35 * 11[/tex]

[tex]47 * OP = 385[/tex]

Make OP the subject

[tex]OP = \frac{385}{47}[/tex]

[tex]OP = 8.2[/tex] --- approximated

Answer: 12.6

Explanation:

NL / LM = QO/OP

31/49 = 8/X

31 • x = 8 • 49

31x = 392

X = 12.645161

X= 12.6

A parcel of water is added to the ocean surface that is denser than any water in the ocean. Suppose the parcel sinks adiabatically to the ocean bottom. Estimate the change in temperature that the parcel undergoes, being explicit about the assumptions you make.

Answers

Answer:

The temperature of the air parcel will decrease. Having a higher density it will sink back.

Explanation:

The adiabatic change in temperature of the parcel of air as it sinks in the ocean bottom. The changes are seen in the dew point as it rises even though the amount of moisture in the parcel means the same. Wen the unsaturated air rises the temperate of the parcel decrease by 10 degrees.

Due to the domino theory, the United States was concemed about Vietnam because

A. Vietnam had become the most powerful democratic nation in Asia

B. Vietnam turned to communism nearby nations might follow.

C. Vietnam was offering economic aid to other nations to spread communism

D. if Vietnam became independent, the US would lose its hold on the region.

Answers

Answer:

B

Explanation:

Vietnam War

Date: 1954-1975

Description:

- Communist North Vietnam invaded South Vietnam

- U.S pulls troops out in the end

- Highly protested

Actions:

- Military Action

Choose the most correct scenario for a sunny summer afternoon at a parking lot.
A. Solar radiation heats the asphalt; the air immediately above is heated through convection; the warm air rises in free conduction.
B. Solar radiation heats the asphalt; the air immediately above is heated through conduction; the cool air rises in free convection.
C. Solar conduction heats the asphalt; the air immediately above is heated through convection; the warm air rises in free radiation.
D. Solar radiation heats the asphalt; the air immediately above is heated through conduction; the warm air rises in free convection.

Answers

Answer:

D. Solar radiation heats the asphalt; the air immediately above is heated through conduction; the warm air rises in free convection.

Explanation:

As the parking lot is exposed to the sun, on a sunny afternoon, we can consider that the sun is radiating with high intensity in this environment, causing the asphalt to be strongly heated. In this case, the air that comes in contact with the asphalt ends up being heated, because the heat of the asphalt is transmitted by the air through the process called conduction, which is the heat transmitted by the agitation of the molecules.

The heated air becomes less dense, that is, it becomes lighter and this causes it to rise, while the cold air is more dense and descends, coming into contact with hot asphalt and also heating up. In that case, a heat transfer called convection occurred.

Drought causes the cord grass population in the food web to
decrease.
Otter
Terrapin

Osprey
Blue
crab
(k
Algae
Snail
Yellow
perch
Shrimp
Cord grass
Which population is most likely to decrease as a result?

Answers

The snail would decrease because that’s it’s source of food.

HELP ASAP
The surface runoff in the diagram washes away topsoil forming a gully. This is an example of:
A) Sedimentation
B)StreamFlow
C)Erosion
D)weathering

Answers

Weathering:3 have a nice day!!!

што е сообраќај и како се определува

Answers

Answer:

Сообраќајот е количина на податоци што ги испраќаат и примаат корисниците на Интернет. Сообраќајот се заснова на времето кога посетителот ја гледа галеријата со слики или видеото, го слуша аудиото и ја презема содржината.

Explanation:

Which of these was the highest collected oceean trash in 2019? Cigarette Butts Plastic Beverage Bottles Plastic straws Food Wrappers

Answers

Answer: Food wrappers

Explanation:

The world's oceans are increasingly being polluted as people dump their refuse in the ocean. There are people that try to clean up the ocean and according to statistics they released about their 2019 cleanup, plastic food wrappers were the highest collected ocean trash in that year.

Following them were cigarette butts with the third highest being plastic beverage bottles. Overall, of the top 10 collected ocean trash, 9 of them were made of plastic which shows that humans are pumping a massively unhealthy amount of plastics into the oceans.

basket ball pro like michel jordan

Answers

Answer:

LeBron James

Explanation:

LeBron James became an immediate star after skipping college to join the NBA's Cleveland Cavaliers. He led the Miami Heat to NBA titles in 2012 and 2013 and won another championship with Cleveland in 2016, before joining the Los Angeles Lakers in 2018.

Hope this helps :)

Which sphere of the earth protects us from the harmful rays of the sun?
Select one:

Geosphere.

Hydrosphere.

Atmosphere.

Biosphere.

Answers

Atmosphere I believe

Complete the sentence.

The main types of rocks on the earth _______.
Select one:

are formed early in Earth’s history and cannot change

can change into other types of rocks

can change into water or gases in the atmosphere

can become part of living things but cannot become other rocks

Answers

I think can change into water or gases in the atmosphere

Answer:

The main types of rocks on the earth are formed early in Earth’s history and cannot change

hope it is helpful to you

The seed of a plant sticks to the fur of an animal as it walks by.

How has the animal most likely helped the plant?
Select one:

By moving the pollen of the plant's flowers.

By causing the seed to sprout.

By fertilizing the ground.

By spreading its seeds.

Answers

Answer: By spreading its seeds

Explanation: I am pretty sure about that.

The answer is by spreading its seeds

How did geographic isolation affect the islands in the Australasia ecozone?
O A. The islands have unique plants and animals.
B. There are conflicts between aboriginal groups.
C. The island groups experience variable weather.
D. They developed heavy trade routes between them.

Answers

Answer:

There are conflicts between aboriginal groups.

Describe the difference between weather and climate

Answers

weather is per day and climate is over 30 years

Explanation:

Weather refers to short term atmospheric conditions while climate is the weather of a specific region averaged over a long period of time. Climate change refers to long-term changes.

In which of the following regions do women have the most economic opportunities?
A Western Europe
B. Eastern Europe
C. northern Russia
D. southern Russia
Please select the best answer from the choices provided
А
ΟΟΟΟ
С C
D

Answers

Answer:

Western Europe

Explanation:

In western europe you have britain, spain, portugal, france, germany, italy, and czechia so these countries have lots of jobs

which country had a PEACEFUL split from British rule?
don't give me a link

Answers

The Federal Republic of Nigeria

Two bodies of water greatly affected by irrigation are--

A) Baltic Sea and Volga River

B) Aral Sea and Colorado River

C) Black Sea and Thames River

D) Caspian Sea and Seine River

Answers

Answer:

Aral Sea and Colorado River

Explanation:

Irrigation is when humans change the direction of water in order for it to be used for agriculture.

The image i attatched is from one of my Geography classes and I took the quiz and B was the correct answer.

Hope this helps!

The two water bodies that are greatly affected by the irrigation are aral and the colorado sea. Hence the option B is correct.

Where is aral sea?

The Aral Sea is a lake that lies between Kazakhstan in the north and Uzbekistan in the south and is called a sea of islands. The colorado rover is major southwestern rover of the US and northern Mexico and has an expansive and forms a watershed.

The Aral sea has sunken due to the irrigation and the colorado rover is used for irrigation in the southwest.

Find out more information about the bodies of water.

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• Para aprendiste a elaborar el cubo y el prisma rectangular, responde:
¿Cuáles son las semejanzas y diferencias entre el cubo y el prisma rectangular?Qué es un prisma 19 qué es un p*** ​

Answers

Answer:

Todos los lados, es decir, la longitud, el ancho y la altura de un cubo son iguales, mientras que en Prism las tres dimensiones pueden ser de diferente magnitud o solo dos de ellas son iguales.

Explanation:

Todos los lados, es decir, la longitud, el ancho y la altura de un cubo son iguales, mientras que en Prism las tres dimensiones pueden ser de diferente magnitud o solo dos de ellas son iguales.

El área de un cubo es igual a 6a ^ 2 donde a es la longitud del lado

El área de la superficie de un prisma rectangular es 2 (wl + hl + hw)

Donde w = ancho

H = altura

L = longitud

El volumen del prisma rectangular es whl

El volumen del cubo es ^ 3

Trilobites were animals that lived in the ocean between 520 million and 540 million years ago. A trilobite fossil can be used as an index fossil. What can a scientist learn from a trilobite fossil found in a layer of rock?

A. That no other types of fossils will be found in the area

B. The temperature of the trilobite when it became a fossil

C. The age of the layer of rock the trilobite fossil was found in

D. That the area near the fossil was always dry land​

Answers

Answer:

C is correct

Explanation:

A scientist learns from a trilobite fossil found in a layer of rock that the age of the layer of rock the trilobite fossil was found in. Thus the correct answer is C.

What is a fossil?

Fossils are the traces or composition of ancient organisms which got buried after dumping in soil or sediments. To be considered a fossil it must be buried and leave an impression before getting decomposed.

Trilobites were animals that lived in the ocean between 520 million and 540 million years ago. They can be utilized as index fossils to define geological time periods.

Scientists learn from a trilobite fossil found in a layer of rock as the age of the layer of rock the trilobite fossil was found in by conducting research and evaluating facts.

Therefore, option C The age of the layer of rock the trilobite fossil was found in is the appropriate answer.

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How is biodiversity related to environmental solutions?

Answers

Answer:

Nature is our partner, delivering life and life support. Biodiversity represents enormous economic value. Science-based.

Explanation:

Environmental services from species and smooth running cycles of ecosystems are necessary at global, regional, and local levels. Biodiversity is essential for maintaining the water cycles, production of oxygen, reduction in carbon dioxide, protecting the soil, etc. ... Helps in soil formation and protection.

The energy that causes the earth's mantle to move comes from...
Select one:

the earth's hot interior.

asteroid impacts.

ultraviolet radiation.

the sun.

Answers

The energy that causes the earth's mantle to move comes from the sun

hope it is helpful to you

hghh

What was the knight looking for? Eldorado​

Answers

The poem begins with the speaker stating that there was a knight who had spent his whole life journeying through “sunshine and … shadow.” He was seeking out the lost paradise city of Eldorado, rumored to contain endless amounts of gold

5. One of Canada's most distinctive characteristics is its _____.
O French culture
O diverse population
O British culture
O Native American history​

Answers

Answer:

One of Canada's most distinctive characteristics is its diverse population.

Explanation:

The population in Canada is widely diverse and unique.

which three items are surface features of the sun

Answers

Answer:

Some features of the Sun's surface include sunspots, solar flares, and prominences.

how to be an effective special needs and/or inclusive teacher?

Answers

Patience. When a child has special needs, patience is a must. ...
Organization. Organization is key for all teachers, especially those who deal with disabled students. ...
Creativity. ...
Acceptance. ...
Intuitive and Calming Nature.

Temperature is a(n) __________________________ component of an ecosystem.
Select one:

living

abiotic

biotic

unimportant

Answers

abiotic

temperature is important since it reveals the outcome of the environment wether it will survive or die

Which of the following phrases best describes the meaning of suburban decay?
A. the loss of diversity as suburban areas lose culture
B. the decline of suburban populations as residents move to new locations
C. the decline in ethics and morality in suburbs
D. the loss of cultural awareness as people move from the city to the suburbs


THE ANSWER IS B

Answers

Answer:

B

Explanation:

Thanks, man. Your answer is very helpful for me.

Thanks for your sharing the answer.

The declines of suburban populations as residents move to new locations best describes the meaning of suburban decay. Hence, option B is appropriate.

What is the meaning of Suburban?

A suburban is a predominantly residential area located inside a metropolitan area, while it may also contain some commercial and mixed-use areas. A suburban may be a smaller city or metropolitan region, or it may be a distinct political entity.

A smaller hamlet is next to or within driving distance of a city. An outlying area of a city or town. The residential region just on the outskirts of a metropolis or major town is referred to as a "suburban."

A city or town's urban community is one where many people reside and where many different types of structures are clustered together. A suburban is an area where residents reside close to a city or town.

Due to the high number of suburbanites who travel to the city for work, suburbans are frequently referred to it as bedroom communities. Subdivisions with solely residential zoning are where the majority of suburban homes are found.

Hence, option B is correct.

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How do big mountain ranges form?
Select one:

Over time, from rivers depositing small pieces of rock in the same location.

Over time, from the earth’s plates pushing on each other.

Suddenly, from a volcanic eruption.

Suddenly, from a single, massive earthquake.

Answers

Mountain ranges often appear on the edges of continents. The earth would of had to smash together to make the land go up into the air. A mountain range or a hill range is a series of mountains and/or hills arranged in a line and connected by high round. Mountain ranges are a result, in most cases, of a geological process called a plate tectonics, which is the motion of large plates, like continents. This theory that supports the concept of continents colliding, explains why there are mountain ranges.

So the answer is B: Over time, from the earth's plates pushing on each other.

Answer:

The answer is Over time, from the earth’s plates pushing on each other

Explanation:

The worlds tallest mountain ranges form when the pieces of the earth's crust called plates smash against each other in a process called plate tectonics.

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Which of the following describes an electric insulator?O A. A material that has a low resistance and prevents charges frommoving freelyB. A material that has a low resistance and allows charges to movefreelyC. A material that has a high resistance and prevents charges frommoving freelyD. A material that has a high resistance and allows charges to movefreely how do you find a radius, btw just give me a quick simple answer to read lol Which reaction type? *combination (synthesis)combustiondecompositionsingle replacementdouble replacement the measures of the angles of a triangle are shown in the figure below. solve for x 4. Describe two ways that geologists can use fossilsto interpret Earth's history. find g(f(x)) for g(x)=8x+5 and f(x)=4x-4 2Y=5XSquaredI dont have the power symbols on my phone.How do I solve for Y? Please help me I don't know how to do this. Hurricane Katrina destroyed oil and natural gas refining capacity in the Gulf of Mexico. This subsequently drove up natural gas, gasoline, and heating oil prices. As a result, this should B) shift the short-run aggregate supply curve to the right. D) move the economy down along a stationary short-run aggregate supply curve. C) move the economy up along a stationary short-run aggregate supply curve. A) shift the short-run aggregate supply curve to the left. True or False1. A mental rehearsal is practicing the dance by visualizing yourself doing thechoreography perfectly in your mind,2. Theater etiquette is what crew and dancers practice backstage during aperformance,3. The stage manager calls the cues for each dance,4. The theater manager is in charge of the stage and backstage areas before,during, and after a performance, I'M ON A TIMER!!!!Juan asked every sixth grade student in his class what they enjoy doing most. Find the probability a student enjoys playing outside the mostPlaying inside: 16Playing outside: 8 At a local bodega, the cost of a banana at the corner store is $1.50, and the cost of abottle of soda is $1.20. What would it cost to get 5 bananas and 2 bottles of soda?What would it cost to get x bananas and y bottles of soda? The moon's light helped me relax. Stars surrounded it and blinked theirlights. I couldn't stop staring at the night sky. I sat down on mybedroom floor and leaned against the wall. I got sleepy when I lookedat the moon's soft glow. I let it send me into a peaceful sleep.The moon's glowing orb soothed my mind instantly. Millions of starsdanced on its left and right, twinkling a steady beat that hypnotizedme. I sat down in the pool of light shining on my floor and leanedagainst the wall. I couldn't help but stare at the beauty framed in mywindow. My eyes grew heavy as I gazed at the moon's soft glow. I letits night song lull me into a peaceful sleep.A. It highlights the negative tone of the passage.OB. It enhances the poetic style of the passage. O C. It creates a feeling of sadness in the reader.D. It helps the reader visualize the narrator's actions. What inference can you make from the fact that Mrs. Kosich greets Ralph by name?A. Mrs Kosich has guessed Ralph nameB. Ralph is wearing a name tagC. Mrs. Kosich Already knows Ralph D. Ralph is Mr. Kosich's son Find the mode of these numbers:4,4,6,6,2,2,6,2,4,2 Can someone please help me with math. Is Y=10x proportional Rock Adventures has 15 employees each working 40 hours per week and earning $30 an hour. Federal income taxes are withheld at 15% and state income taxes at 6%. FICA taxes are 7.65% and unemployment taxes are 3.8% of the first $7,000 earned per employee. What is the actual direct deposit of payroll for the first week of January What is the measure of angle x? (b) Solve this problem 9-X= 2