How much time does it take a person to walk 8 km east at a velocity of 4 km/h

Answers

Answer 1

Answer:

it takes 2 hours

Explanation:

brainlyest?

Answer 2

Answer:

2 hours

Explanation:

Time = Distance ÷ Speed


Related Questions

a chain of volcanoes that develop parallel to a trench

Answers

Answer:

Offshore volcanoes form islands, resulting in a volcanic island arc. Generally, volcanic arcs result from the subduction of an oceanic tectonic plate under another tectonic plate, and often parallel an oceanic trench.

Explanation:

during which phase of the cell cycle does most cell growth occur

Answers

Cell growth occurs constantly throughout interphase. S phase is the time when all the cell's chromosomes are replicated so significant cell growth occurs here, but during both G1 and G2 cell growth occurs.

hope this helps

During the interphase of the cell cycle most cell growth takes place.

What is cell cycle?

A cell cycle is the series of events that takes place in a cell as it grows as well as divides.

A cell spends the maximum of its time in what is referred to as interphase, where it grows, reproduces its chromosomes, along with prepares for cell division. The cell then exits interphase, goes through mitosis, and divides completely.

The cell cycle's longest phase is interphase. This is the stage at which the cell undergoes and duplicates its DNA before entering mitosis.

Chromosomes align, separate, and move into new daughter cells during mitosis. Because the prefix inter- means "between," interphase occurs between mitotic (M) phases.

Thus, the cell growth takes place in the interphase of the cell cycle, and the division takes place in the M-phase.

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Which of the following is not a function of the cell membrane?
•It supports and shapes the cell.
•It assists in cell division.
•It positions organelles.
•It provides energy to the cell.

Answers

Answer:

A is the right answer

Explanation:

The cell wall is the outermost layer of the cell. It surrounds the cell membrane and provides these cells with structural support and definite shape. It prevents the over-expansion of the cell when water enters the cell.

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Capillary action occurs because

A.surface tension is low.
B.adhesive forces are greater than cohesive forces.
C.surface tension is high.
D.cohesive forces are greater than adhesive forces.
E.adhesive forces equal adhesive forces.

PLEASE EXPLAIN !!!!

Answers

Option B : adhesive forces are greater than cohesive forces.

Explanation:-

Capillary action occurs when the adhesion to the walls is stronger than the cohesive forces between the liquid molecules.

How many atoms of oxygen are in the formula for 2 hydrogen peroxide? 2H202

Answers

There are 2oxygen atoms

Answer:

The mass of hydrogen peroxide, H2O2 would be calculated like this: H2O2 has 2 hydrogen atoms and 2 oxygen atoms in it. So one molecule of hydrogen peroxide weighs in at 34.02 u.

Explanation:

pretty self explanatory.

which homeostasis mechanism is the plant version of an animal drinking when it gets thirsty?

A ) a plant wilting when soil dries out
B ) a plant making sugar through photosynthesis
C ) a plant's growth response toward light
D )a plant's growth response to gravitation​

Answers

A) a plant wilting when soil dries out.

The excretory system disposes waste through the stomach.

True or False?

Answers

Answer:

False.

Explanation:

Actually the stomach isn't part of the excretory system, it's part of the digestive system.  The organs of the excretory system include the kidneys, large intestine, liver, skin, and lungs. The kidneys (also part of the urinary system) filter out blood from waste. The large intestine's job is to eliminate solid waste that remains after food is digested and water is extracted from the indigestible matter.  The liver breaks down many substances in the blood, including toxins. Sweat glands in the skin secrete a fluid waste called sweat or perspiration; however, its primary functions are temperature control and pheromone release. The lungs (also in the respiratory system) excrete some waste products, such as carbon dioxide and water.

Hope this helps!

True or false? An ecosystem includes all living things (producers, consumers, decomposers) in an area and their nonliving environment

Answers

Answer:

True

Explanation:

Answer:true

Explanation:

How many time can you revive?

Answers

Answer:

0

we are not cats

0 we can’t revive, we don’t have 9 lives we have one.

The sodium-potassium pump is a specialized type of transport protein found in your cell membranes. The pump's
job is to move potassium ions into the cell in
the direction of low to high concentration. In order for this to happen, the cell uses energy
to operate the pump. This is an important step in the function of our
nerve cells. What type of transport does the sodium-potassium pump use?

A. Diffusion
B. Active Transport,
C. osmosis
D. Passive Transport

Answers

Answer:

Active Transport

Explanation:

Active Transport requires energy input

In subduction, what determines which plate will be on top and which will be on bottom?

Answers

the top plate will be on the top and the bottom plate will be on the bottom??? in subduction

Interpret each rule of Kartilya ng Katipunan in one word ​

Answers

Answer:

Throughout the clarification category below, the definition including its query is mentioned.

Explanation:

The Kartilya ng Katipunan acted as either the reference book or field guide for the organization's new representatives, which set out other principles and expectations including its party. Emilio Jacinto published the first version of Kautilya. The revamped Decalogue was later published by Andrés Bonifacio. It would never be released although Bonifacio thought that Kartilya of Jacinto seemed equivalent to what he has already created.

Please help I’ll cashapp and mark brainless

Answers

Answer:

d.

Explanation:

Making observations. :)

Answer:

b. testing hypothesis

Explanation:

what do you test in history and art, nothing

Tell me a description of the urea in simple terms.

Answers

Answer:

Urea: A nitrogen-containing substance normally cleared from the blood by the kidney into the urine. Diseases that compromise the function of the kidney often lead to increased blood levels of urea, as measured by the blood urea nitrogen (BUN) test.

Do you think a magnitude 9.0 earthquake will generate a tsunami?

Answers

its possible but rare

acer saccharum scientific name for the sugar maple tree acer is the name of the trees?

A.genus
B.phylum
C.species
D.kingdom

Answers

Genus comes first so genus

What is the ratio of hydrogen and oxygen in all carbohydrates when compare to carbon ____hydrogen: _____oxygen

Can anyone tell me this ?

Answers

Answer:

n(C1H2O1)

Explanation:

Think of glucose, which is C6H12O6.  In the case of glucose, n would be 6.

Which of the following is an example of diffusion?
A water freezing into ice
B sugar dissolving in a glass of water
C rain falling from the sky
D a stone sinking to the bottom of a lake

Answers

The answer is B, because the sugar is moving down a concentration gradient.

Which of the following best describes giant stars? A. hot, dim stars B. cool,dim stars C. hot ,bright stars D. cool, bright stars

Answers

Answer:

C hot bright stars

Explanation:

they are literally hot burning balls of bright gas

Answer:

It is the answer C

:)

Which of the following does not lead to an increase in phytoplankton reproduction?
a.
increased nutrient availability
b.
increased sunlight
c.
increased oxygen levels
d.
increased levels of carbon dioxide


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

C. increased oxygen levels

Explanation:

edge 2020

A membrane that allows some molecules to pass through but not others is called a(n)_____ _____ _____

Answers

has a selection function so it selects the substances which to enter or not inside the cell

Which is an outer planet?​

Answers

Saturn is an outer planet

Herbivores obtain most of their energy by
A.consuming animals
B.consuming plants
C.producing sugar
B. absorbing sunlight

Answers

Answer: B.) Consuming plants


Herbivores consume and get their energy from only plants :)

What are some questions that scientists on Earth might study? Choose all that apply.

A. How Weather & Climate systems affect Earth?
B. How can Earthquake be detected?
C. How does light travels through optical fibers?
D. Is water found on other planets?

Answers

Answer:

A,B,C

Explanation:

It won't be D. because you would need to study or go to the other planets to answer the question.

Hope this helps!

Which of the following elements is required for growth and development and is in our DNA? *
hydrogen
carbon
oxygen
nitrogen
phosphorus

PLEASE HELP

Answers

Answer:

Carbon hydrogen oxygen nitrogen

Explanation:

Phosphorus is also essential all these are essential for growth and our present in our DNA

which is smallest to largest form?
human tissue, human cell, bacterial cell, virus, human organ, human organ system.

Answers

Answer:

Explanation:

virus, bacterial cell, human cell, human tissue, human organ, human organ system.

The smallest to largest forms in the order:

VirusBacterial cellHuman cellHuman tissueHuman organHuman organ system.

The Virus comes first as it is much smaller than the Bacterial cell and can be

viewed with an electron microscope which has a higher magnification

Cells are the smallest unit of life and they aggregate to form tissues . The

tissues then aggregate to form organs and organs to organ system which is

why the human cell comes next followed by the Human tissue, Human organ

and lastly Human Organ systems.

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Fireflies emit light. The production of light by an organism is called bioluminescence. To generate visible light, cells in a firefly's tail produce thousands of luciferase enzymes. Luciferase binds to a chemical called luciferin. Once bound, the luciferase enzyme speeds up a chemical reaction that combines an oxygen molecule and luciferin to produce oxyluciferin. This reaction requires energy and releases light. Which of the following best describes how the luciferase enzyme speeds up the chemical reaction? F Luciferase increases the amount of time the light is visible. G Luciferase decreases the amount of energy required for the reaction to start. H Luciferase increases the number of sites on luciferin that must bind to oxygen. J Luciferase decreases the temperature of the environment inside the body of the firefly.​

Answers

Answer:

Fireflies emit light. The production of light by an organism is called bioluminescence. To generate visible light, cells in a firefly's tail produce thousands of luciferase enzymes. Luciferase binds to a chemical called luciferin. Once bound, the luciferase enzyme speeds up a chemical reaction that combines an oxygen molecule and luciferin to produce oxyluciferin. This reaction requires energy and releases light. Which of the following best describes how the luciferase enzyme speeds up the chemical reaction?

Explanation:

b

The description that best describes how the luciferase enzyme speeds up the chemical reaction is - Luciferase decreases the amount of energy required for the reaction to start.

Fireflies generate a chemical reaction that allows their body to emit light, inside their body. This light generation is called bioluminescence. This process involves various steps:

Oxygen binds with calcium, luciferin chemical with ATP to make oxyluciferin.In the body of fireflies, there is the production of an enzyme called luciferase.This chemical reaction takes place in presence of luciferase that speeds up this reaction by decreasing the activation energy of the reaction.At the end of the reaction body of fireflies light up.

Thus, the correct answer is - Luciferase decreases the amount of energy required for the reaction to start.

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Which of the following is not a current theory regarding global climate change? a. Global warming will stimulate crop growth. b. Even the moderate projections on global warming will cause devastation. c. Higher levels of carbon dioxide in the atmosphere will have no effect. d. Sea levels will rise as a result of global warming.

Please select the best answer from the choices provided A B C D

Answers

Answer:

c

Explanation:just took the test

Flooding has the potential to spread illness and harm infrastructure and ecosystems. Health problems can reduce worker productivity, raise mortality, and have an impact on the availability of food. Thus, option C is correct.

What is impact of global climate change on ecosystem?

Droughts that are more frequent and intense, storms, heat waves, rising sea levels, melting glaciers, and warming oceans can all directly harm animals.

Destroy the habitats they rely on for survival, and have a disastrous impact on people's way of life and communities. Dangerous weather events are increasing in frequency or severity as climate change gets worse.

Therefore, Higher levels of carbon dioxide in the atmosphere will have no effect. Food production and human health can be harmed by drought.

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A big body of land on the globe?

Answers

russia is huge so russia and the places around there

The mountains of the Sierra Nevada play a role in the formation of desert in eastern California and Nevada.

What is this an example of?

Answers

Answer:

The correct answer would be - The lithosphere influences the atmosphere and biosphere .

Explanation:

The mountains of the Sierra Nevada play the role of a barrier that blocks the air or wind that brings the clouds filled with water to eastern California and Nevada as it can not pass the mountains and reach the other side of mountains which cause less or no rain to this region.

Rain is a very important aspect for the region to be less diverse in plants and animals as most of them require water but as it is described there is no or very little precipitation so it becomes desert.

This makes it an example of the lithosphere influences the atmosphere and biosphere .

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