A car increases its speed along a straight road from 20.0 km/h to 50.0 km/h in a time of 5.0 s.
What is the magnitude of the acceleration of the car?
O A 3.0 (km/h)/s
B. 6.0 (km/h)/s
C. 7.0 (km/h)/
D. 10.0 (km/h/s

Answers

Answer 1
Final speed - Initial speed / time.
50.0 - 20.0 / 5.0
30.0 / 5.0
= 6.0 (km/h)/s
Correct choice is B.

Related Questions

Identify the statement below that is NOT a principle of evolution. O Populations evolve, individuals do not O Negative adaptations will become more common in a population O Variations occur naturally within a population Adaptations help individuals compete successfully for survival

Answers

Answer:

Negative adaptations will become more common in a population

Explanation:

that's the one that is NOT a principle

Negative adaptations will become more common in a population is NOT a principle of evolution.

what is population ?

A discrete accumulation  identifiable characteristics such as people, animals with the objective of analysis and data collection is called a population.

A population consists of a same group of species who reside in a particular geographical place with their reproductive capacity to interbreed.

In a population Not all individuals are able to survive and reproduce due to genetic variations in them, a local population is  restricted to a smaller area or can occupy a larger area, making up for the entire species.

when individuals in local populations spread between other local populations called as metapopulation.

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The primary source of energy in most ecosystems is/are

Answers

Answer:

The Sun.

Explanation:

Energy reaches the Earth in the form of electromagnetic radiation.

Terrestrial solar radiation means solar radiation that reaches the Earth after passing through the Earth's atmosphere. About 97% of solar radiation reaches the Earth in the range of wavelengths 0.29 - 2.5 μm, and about 3% with wavelengths greater than 2.5 μm.

Describe the steps to complete a dihybrid
cross.

Answers

Answer:

1. Write out your key in terms of what is dominant and what is recessive.

2. Determine the genotypes of each parent and write the cross.

3. Figure out what kind of gametes each parent may produce.

4. Set up a Punnett square for your making.

Explanation:

A dihybrid cross must be a 4 x 4 square which two variables for each square.

In which direction is the wind likely to blow in the picture?
WATER
LAND
A. From the ocean to the land
B. From the sun to the land
O O O O
C. From the land to the ocean
D. From the land to the sun

Answers

Answer:

From the ocean to the land. just took the quiz.

Explanation: a p e x

During the day, the air above land in coastal regions warms up more quickly and starts to rise, hence option A is correct.

What is the direction of the wind?

As the warm air rises, a low-pressure region develops on the surface, enabling air from the sea to enter. As a result, the wind blows from the sea to the land during the day.

Predominant winds often blow east-west rather than north-south, especially in the afternoon when the land is being heated by the sun to its maximum.

the Coriolis effect causes wind systems to twist counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere most frequently in the spring and summer.

Therefore, because of the greater temperature differences between the ocean and nearby land, hence option A is correct.

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10 POINTS QUESTION: Objects of different masses are suspended from a height. Which combination of features will have the greatest gravitational potential energy?
A. high mass and high height
B. high mass and low height
C. low mass and low height
D. low mass and high height

Answers

Answer: high mass and high height

Explanation:

The gravitational potential energy is refered as the potential energy that has to do with the energy in a particular object due to the height of that object.

With the above explanation, when objects that have different masses are suspended from a height, the one that will have the greatest gravitational potential energy will be the one with a high mass and high height.

Therefore, the correct option is A.

In the 1520s, the Spanish explorer Cortes and his armies carried the virus that causes smallpox to NorthAmerica and South America.
The graphs above illustrate the death rate among both Europeans and American Indians from smallpox at that time. Which of the following statements best explains the difference in death rates?

F. People in Europe were healthier than American Indians.

G. Antibiotics were available in Europe but not in North America.

H. American Indians had never been exposed to the smallpox virus, so resistant individuals had not yet become common.

J. American Indians were exposed to a virus that was different from the virus for smallpox in Europe.

Answers

Answer:

I can't see the graph but I believe that the answer is H

The life span of a star depends on:
plz hurry :)

Answers

Answer:

It's size

Explanation:

Answer:

mass

Explanation:

The lifetime of a star depends on its mass. Since stars spend about 90% of their lives burning hydrogen into helium on the main sequence, their main sequence lifetime is also determined by its mass.

CAN SOMEONE HELP ME PLEASE ITS DUE RIGHT NOW !!! :(

Answers

G I help you get correct!

I am confusion can someone help?

The recommendation is that 9 year-old children get 11 hours sleep a night.

A telomere from a child that gets 11 hours sleep a night is 8,000 nucleotides long.

How long would you expect a telomere to be in a child that gets 9 hours sleep a night?

Answers

Answer:

I believe it would be 6,000

Select the correct answer. What falls in the gray area between living and nonliving things? A bacteria B. mold C. virus D. yeast Reset​

Answers

Answer: C Virus

Explanation:

Why is it virus?, you may ask. Well... virus falls on the grey area between non living and living things

During a harsh winter, the surfaces of lakes, ponds, and streams stay froren longer than usual
Why would this decrease the growth rate of deer in the area?
А
There would be less water available.
B
There would be less shelter available
C.There would be fewer hours of sunlight
D. There would be more predators in the area,

Answers

B there would be less water

There would be less water available

What is harsh winter ?

Harsh climates or conditions are very difficult for people, animals, and plants to live in.

How Does a Harsh Winter Affect Wildlife?

A snowy winter can alter migration patterns, make foraging for food difficult and make a typical environment uninhabitable.

How do animals rely on their natural environment?

This ecosystem is its natural habitat. This is where the basic needs of the organism to survive are met: food, water, shelter from the weather and place to breed its young. All organisms need to adapt to their habitat to be able to survive.

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which characteristic of living organisms is responsible for the production of oxygen in the leaf of a plant exposed to sunlight.

Answers

Answer:

Photosynthesis.

Explanation:

Photosynthesis is a characteristic of living organisms and it is typically responsible for the production of oxygen in the leaf of a plant exposed to sunlight. It is a chemical process used by plants to obtain food from sunlight.

All living organisms such as plants and animals require energy to function properly (life activities). Thus, the cell organelle where energy from nutrients is released is generally referred to as mitochondria. Animals and plants retrieve energy using mitochondria to do cellular respiration because they typically act like a digestive system by taking in nutrients, breaking them down and obtaining energy rich molecules for cell-life activities.

Cellular respiration can be defined as a series of metabolic reactions that typically occur in cells so as to produce energy in the form of adenosine triphosphate (ATP). During cellular respiration, high energy intermediates are created that can then be oxidized to make adenosine triphosphate (ATP). Therefore, the intermediary products are produced at the glycolysis and citric acid cycle stage.

define any three types of chromosomes depending upon position of centromere?​

Answers

Answer:

The type of chromosomes based on the position of centromere are of the following four types :

1) Metacentric chromosome: centromere in middle forming two equal arms.

2) Sub-metacentric chromosome: centromere placed near to one end resulting in one shorter and one long arm.

3) Acrocentric chromosome: Centromere placed close to one end forming one extreme short and one extreme long arm.

4) Telocentric chromosome: terminally placed centromere.

solution

What is the role of oxygen in photosynthesis

Answers

Photosynthesis is the process in which light energy of the sun is converted to chemical energy. ... The oxygen so released is used in the respiration process to break down complex molecules (generated in photosynthesis) and releases energy in the form of ATP (adenosine triphosphate) molecules.

Answer:

as fare as I can remember oxygen is actually a waste product that is produced at the end of a plant's photosynthesis cycle

Explanation:

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Question 3 (2 points) According to Newton's 2nd Law, Force equals mass times acceleration. Sidney Crosby has a mass of 91kg and Claude Giroux has a mass of 85kg. If they both are accelerating at 20m/s2, which person will have the greater force when they collide? A.Sidney Crosby
B.Claude Giroux
C.They both will have the same force
D.Not enough information is given.​

Answers

Answer:Sidney Crosby

Explanation:

Waste produced by agriculture, mining, households, industry and other
human activities can end up in which of the following?*
A: Oceans
B:groundwater
C:streams and rivers
D:all of the above

Answers

If your could pick more then 2 answers the pick a and c and if yiu cants it’s a or c

Name the nitrogen bases that pair up to make the rungs of the DNA ladder.

Answers

Answer:

Two of the bases are purines- adenine and guanine. The pyrimidines are thymine and cytosine.

Explain how greenhouses modify the environment to improve growing
conditions for plants?

Answers

they modify by creating an acceptable environment, and condition for plants

Osmosis is the movement of
across a memberane,
Food
water
oxygen
energy

Answers

Answer:

osmosis is the movement of a solvent across a membrane, so water

Which part of the digestive system does earthworm not have?

Answers

Answer:

stomach

Explanation:

Digestion occurs mostly in the intestine and the digested food is absorbed by villi. Then pass into blood stream through capillaries. Undigested food and the soil are released out in the form of casting through anus.

Drop a paper a piece of thermocol and a piece of plastic from a height of 10 to 15 feet not the time for each object to hit the ground why does paper take more time than thermocol and thermocol more than the plastic piece make the paper to fell down in such a way that it should hit the ground before all of them and how does it happen

Answers

Answer:

The paper takes more time to fall than the piece of thermocol because it experiences a greater air resistance than the thermocol.

The thermocol takes more time than the piece of plastic because it experiences a greater air resistance.

The piece of paper can be made to fall faster than all of them and hit the ground faster by crumpling it and then giving it an initial velocity by throwing it downwards.

Explanation:

Objects falling freely due to the force of gravity alone are accelerated downwards at a constant value 9.8 m/s². This acceleration due to gravity is constant for all objects on the earth's surface and is independent of the mass of the objects.Therefore, when objects are release from the same height and allowed to fall freely under gravity, they are accelerated downwards to the same extent and are expected to hit the ground at the same time. However,due to the resistance of the air through which the objects are falling, they may hit the ground at different times depending on the shape of the falling objects.

Objects which have a greater surface area or volume per unit mass will experience a greater air drag or resistance and therefore, will take a longer time than objects of similar mass with a smaller volume or surface area.

The paper has a greater surface area per unit mass than the piece of thermocol, therefore, it takes more time to fall than the piece of thermocol because it experiences a greater air resistance than the thermocol.

The thermocol has a greater surface area per unit mass than the piece of plastic, therefore, it takes more time than the piece of plastic because it experiences a greater air resistance.

The piece of paper can be made to fall faster than all of them and hit the ground faster by crumpling it, thereby reducing its surface area per unit mass it and then giving it an initial velocity by throwing it downwards.

Akshay decides one day to run a marathon without any training. After 10 minutes your lapsed and akashay, has run half a mile, he begins to get cramps in his thigh he's also breathing very rapidly what is causing the cramps on his legs?

Answers

Answer:

Lactic acid accumulation in the leg muscles

Explanation:

Muscle cramps are painful feelings caused by sudden contractions of the muscle. Cramps are caused by several reasons, however, based on the description of Akashay's activity, it is caused by ACCUMULATION OF LACTIC ACID in the leg muscles due to strenuous exercise.

According to this question, Akashay decided to run a marathon without any prior training. However, he started to get cramps on his thigh coupled with rapid breathing. There is a lack of oxygen in his cells, hence, anaerobic respiration was used leading to the formation of lactic acid. The buildup of lactic acid is what causes the painful sensation called CRAMP.

James examines a cell from an aloe plant and a cell from an owl feather. Which structure is found only in the cell from the aloe plant?
O A. chloroplast
OB. membrane
O C. mitochondrion
O D. nucleus

Answers

I’m thinking it’s A. Chloroplast

The chloroplast will only be found inside the Aloy plant while other structures will be shared by both cells. Option A is correct.

Difference between Plant and animal cells:Both plant cell animal cells are eukaryotic cells, but both have some unique structures.Plants have a cell wall but animals just have a cell membrane.A plant cell has a chloroplast for photosynthesis while an animal cell does not have a chloroplast.

Since owl is an animal and Aloy is a plant

Therefore, the chloroplast will only be found inside the Aloy plant while other structures will be shared by both cells.

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 The tool that measures air pressure is called what?

Answers

Answer: A barometer !

Explanation:

Hoped this helped ! :)

how does climate and vegetation vary with latitude and elevation?​

Answers

Answer:

Climate and vegetation vary with latitude and altitude of an area. Latitude measures distance from the equator; altitude measures elevation above sea level. ... Deserts have little precipitation and little vegetation. They are found in tropical, temperate, and Polar Regions.

The climate and vegetation may significantly vary with the latitude and elevation. This is because as elevation increases the temperature decreases gradually that do not favor the actual growth of vegetation.

What is Climate?

Climate may be defined as a type of weather conditions that are persuading in any geographical location for a long period of time. In a more simple sense, it is characterized as the long-term pattern of weather in a particular area.

Latitude estimates the distance from the equator part of the earth and goes through the tropical, temperate, and colder regions of the earth. The vegetation is typically reduced with increasing the altitude or elevation with respect to the sea level.

It may also be noticed that the vegetation may alter with respect to the geographical location of the whole earth. It was never found to be completely absent.

Therefore, the climate and vegetation may significantly vary with the latitude and elevation.

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An archer shot a 0.06 kg arrow at a target the arrow accelerated at 5,000 m/s squared to reach a speed of 50.0 m/s as it is left the bow.During this acceleration what was the net force to the nearest newton?

Answers

Answer:

the net force to the nearest newton is 300 N

Explanation:

The computation of the net force to the nearest newton is shown below:

According to the newton second law of motion, the force is proportional directly to the change rate in momentum

So,

Resulted force = mass × acceleration

F = 0.06 kg × 5,000 m/s

= 300 N

Hence, the net force to the nearest newton is 300 N

Answer:

300 N

Explanation:

HELP PLS!!!!!!
Polygenic traits are when one phenotype (trait) is controlled by several different genes. The provided example shows human skin color being controlled by 3 different genes. Describe one other trait (don't use skin color!) in any animal that you think could be a Polygenic trait, and explain why you think that it is (HINT: I did mention an example in class yesterday... lets SEE if you remember!).

Answers

This is sooooo hard but I’ll try

What is the role of the nucleus in plant and animal cells?
O
A. It stores the genetic information for the cell.
B. It serves as a boundary for the cell.
o
C. It produces energy for the cell.
O
D. It stores waste for the cell.

Answers

Answer:

Explanation:

It’s A I’m pretty sure

List down 5 evidence of exogenic processes and show how it affects or how it is affected by human activities.​

Answers

Answer:

Mass wasting has drastic effects on human and animals life in the form of landsliding , earthquakes . Deposition is the pres in which sediments , rocks and soil are added land mass . A positive effect of deposition is that it creates new land . And negative effect is it takes away new lands .

The five (5) evidence of exogenic processes on Earth's surface include the following:

1. Weathering.

2. Stripping.

3. Erosion.

4. Mass wasting.

5. Deposition.

Exogenic processes can be defined as the processes that occur at or near the surface of planet Earth due to the action (influence) of exogenic forces or geomorphic agents.

The five (5) evidence of exogenic processes on Earth's surface include the following:

1. Weathering: the removal of various minerals from rocks causes depletion in oil and gas reserves that may be available for human consumption.

2. Stripping: it involves the removal of essential chemical elements and  components from precious stones and landform such as a mountain.

3. Erosion: this causes flooding and washing away of various soil nutrients and as such affects agriculture.

4. Mass wasting: it moves rock debris, soil nutrients, and regolith downward, which are substances that are useful for certain human activities such as during mining.

5. Deposition: it is a consequence of erosion and it result in the laying down of sediment on a landform or landmass.

This sometimes make the foundation of buildings stronger to withstand stress.

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In the picture below, letter E represents:

A.substrate
B.enzyme
C.products
D.active site

Answers

Answer:

C.products is the answer.

Answer:

C. products

Explanation:

In the picture above, the letter E represents products.

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