Cho hai điện tích q1 = 2.10-6 C, q2 = 4. 10-6C, đặt tại A và B trong không khí biết AB = 2 cm. Xác định vectơ cường độ điện trường tại:
a) H, là trung điểm của AB.
b) . M, MA = 1 cm, MB = 3 cm.
c) N, biết rằng NAB là một tam giác đều.

Answers

Answer 1

Answer:

A

Explanation:

sorry try lang baka mali

Related Questions

Which one of these is an example of a virus that can affect a range of hosts? A) the varicella virus B) the rabies virus C) the rhinovirus D) the rubella virus

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Answer:

B) the rabies viru

Explanation:

most chemical reactions in organisms are regulated by organic catalysts known as

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Answer:

An enzyme is a substance that acts as a catalyst in living organisms, regulating the rate at which chemical reactions proceed without itself being altered in the process. The biological processes that occur within all living organisms are chemical reactions, and most are regulated by enzymes.

Explanation:

Hope this helps...

Can u please help me on this question, first person to answer will be marked brainlist

Put the words in order like 1 something 2 something 3 something or whatever u think is the best way to answer this question for me

Answers

Answer:

1.이산화탄소

2.낮은

3.높은

4.쓰레기

5.빠른

6.산소

7입자

Explanation:

내가 틀렸다면 나를 수정하는 데 도움이되기를 바랍니다.

a regular solid box has a length of 5cm a width of 2cm and a height of 3cm what is the volume of the box

Answers

Answer: 30 cm³

Explanation:

Volume of the regular solid = l × w × h

                                              = (5 cm × 2 cm × 3 cm)

                                              = 30 cm³

Write an equation of a line parallel to y=3x-1 passing through the point (0,3).

Answers

Answer:

wow never heard the question

an immiscible mixture that is not composed oil and water

Answers

Answer:

"like-dissolves-like"

Any polarized molecule will not be soluble in a mixture of non-polarized molecules. Also, Acids and Bases mix with one another but not into neutral compounds. Organic molecules also do not mix with non-organic or aqueous solutions (like those without neutral pH)

Explanation:

Who is the Father of the Periodic Table?​

Answers

Answer:

Dmitri Ivanovich Mendeleev

Explanation:

Answer:

Dmitri Mendeleev

Explanation:

Nitrogen makes up ________ of our atmosphere??? will mark Brainliest

Answers

78%

he atmosphere is 78% nitrogen

How many protons and neutrons are in the third isotope?

Answers

Answer:

6 protons and 7 neutron

Explanation:

Carbon has a third isotopes named carbon-13

All carbon isotopes have 6 protons .

This is called atomic number. To make it up to 13 in carbon -13 you will need 7 neutrons and 6protons .

what quantities vary between isotopes of an element

Answers

number of neutrons

nucleon number

The quantities that vary in the isotopes of the same element is number of nucleons and the number of neutrons.

Isotopes are atoms of the same element that have different numbers of neutrons. The number of protons and electrons in isotopes of an element remains the same because they determine the element's chemical properties.

Nucleons refers to the collective number of protons and the neutrons present inside the nucleus. Isotopes can have different physical properties due to the varying number of neutrons.

Therefore, the isotopes differ in the quantity of number of neutrons and the nucleons present.

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1.What is another term for the 24 hour clock?

Answers

Answer:

military time

Explanation:

military time

What happens when water reaches its boiling point?

Answers

Answer:

khi sôi nhiệt độ của nước đạt 100oC, đến lúc này một phần nước sôi sẽ biến thành hơi nước, hơi nước sẽ đùn lên phá vỡ mặt nước và bốc hơi vào không khí, hình thành lên hiện tượng sôi của nước. Nước sôi đánh dấu mốc chuyển đổi trạng thái từ nước (thể lỏng) sang hơi nước (thể khí).

Explanation:

which type of control agent exerts noncompetitive inhibition?

Answers

Answer:

D

Explanation:

If your choices are:

a) Substrate analog

b) Protein kinase

c) Allosteric effector

d) Both (b) and (c).

then your answer is D :)

Which is not an example of a compound?
Ingnore the top PLEASE HELPP

Answers

Answer:

The 3rd answer or NCI is the correct answer

Explanation:

Hope this helps:)

Answer:

the 1st one

Explanation:

How do you separate rice grains that have accidentally mixed with flour

Answers

You can use a sieve, aka a sifter, to separate the rice grains from the flour

The reaction between sodium and water releases a lot of energy to the
surroundings. What type of process is this?

Answers

Answer:

an exothermic reaction i think

Explanation:

Soraya left some soup in the refrigerator. She looked at the soup every day, but she always decided not to eat it. After five days, she started to see mold growing on the surface of the soup. She looked up mold online and found that mold is made of fungal cells. Why didn't Soraya see the mold growing on the soup before the fifth day? Why can she see it now? ​

Answers

Explanation:

In general, the longer that moisture is present, the greater the chance for mold to grow and spread. When mold spores encounter a moist surface, it starts growing within a few hours, spreading into the material while also filling the air with thousands of mold spores.

Mountains form when plates _______.



collide (convergent boundary)


have faulting occur


divide (divergent boundary)


slide past each other (transform boundary

Answers

Answer:

They form when plates collide. I hope this helps you!

Which of the following physical properties would tell you about an element's mass per unit volume ratio?

hardness
boiling point
crystalline shape
density
all of the above

Answers

Answer:

It's the density

what is the end-product of the beta-amylase reaction?

Answers

Answer:

maltose

Explanation:

β-amylase is an enzyme found in fungi, bacteria and plants but not in humans. Unlike α-amylase, β-amylase can only degrade starch from the non-reducing end of the polymer chain by hydrolysis of the second α-1,4 glycosidic bond. The end product is thus maltose, i.e. two glucose units.

How many Joules does it take to raise 1 g of water 2°C

Answers

Answer:

Quantitative experiments show that 4.18 Joules of heat energy are required to raise the temperature of 1g of water by 1°C. Thus, a liter (1000g) of water that increased from 24 to 25°C has absorbed 4.18 J/g°C x 1000g x 1°C or 4180 Joules of energy.

Why silicone and germanium are useful in electronic industry????​

Answers

Answer:

: Each has four valence electrons, but germanium will at a given temperature have more free electrons and a higher conductivity. Silicon is by far the more widely used semiconductor for electronics, partly because it can be used at much higher temperatures than germanium

Explanation:

have a great day

a) What is the role of electrons in an atom?

b) How do we determine how many electrons are in an atom?

Answers

a.) electrons circle the Nucleus and have a negative charge
b.) by looking at the atomic number

Explain what the force of Gravity on each planet depends on.

Answers

Answer:

It depends on the size and mass of the object. Look at Jupiter. It has a higher gravitational pull because it has a higher mass

help me with this:((​

Answers

1. a

2. a

3. b

4. b

5. c

6. a

7. c

How many moles of Ag contain 4.49 x 1023 atoms Ag?

Answers

Answer:C, 0.746 mol Ag.

1 mol Ag = 6.022 x 1023 atoms of Ag -> 4.49 x 1023 atoms of Ag x 1mol Ag/6.022 x 1023 atoms -> 0.746 mol Ag

Explanation:

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore,  0.746 mol of Ag contain 4.49 x 10²³ atoms Ag.

What is mole?

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample. There are so many formula for calculating mole.

we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number

mole =given number of atoms ÷ 6.022×10²³(Avogadro number)

given number of atoms of Ag=4.49 x 10²³ atoms

Substituting the values

mole= 4.49 x 10²³ ÷ 6.022×10²³

mole =  0.746 mol

Therefore,  0.746 mol of Ag contain 4.49 x 10²³ atoms Ag.

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What law states that matter cannot be created nor
destroyed, even in a chemical reaction?
A
Newton's Laws of Motion
B
Law of Conservation of Mass

Answers

Answer:

I believe it would be Law of conservation of mass (sorry if I'm incorrect)

ADVANTAGES AND DISADVANATAGES oF genectic enginerring

Answers

Advantages of genetic engineering would be that we would be able to eliminate natural and unnatural born diseases and genetic malfunctions within the human body. for example, with genetic engineering we would be able to eliminate the single causing factor for a person having cancer or a brain tumor. A disadvantage would be tampering with nature and how we as human beings are made/composed of

Advantages of Genetic Engineering?

1. It allows for a faster growth rate.

2. It can create an extended life.

3. Specific traits can be developed.

Plants and animals can have specific traits developed through genetic engineering that can make them more attractive to use or consumption. Different colors can be created to produce a wider range of produce. Animals can be modified to produce more milk, grow more muscle tissue, or produce different coats so that a wider range of fabrics can be created.

4. New products can be created.

5. Greater yields can be produced.

Genetic engineering can also change the traits of plants or animals so that they produce greater yields per plant. More fruits can be produced per tree, which creates a greater food supply and more profits for a farmer. It also creates the potential for using modified organisms in multiple ways because there is a greater yield available. Modified corn, for example, can be used for specific purposes, such as animal feed, ethanol, or larger cobs for human consumption.

6. Risks to the local water supply are reduced.

Because farmers and growers do not need to apply as many pesticides or herbicides to their croplands due to genetic engineering, fewer applications to the soil need to occur. This protects the local watershed and reduces the risk of an adverse event occurring without risking the yield and profitability that is needed.

7. It is a scientific practice that has been in place for millennia.

Humans in the past may not have been able to directly modify the DNA of a plant or animal in a laboratory, but they still practiced genetic engineering through selective breeding and cross-species or cross-breeding. People would identify specific traits, seek out other plants or animals that had similar traits, and then breed them together to create a specific result. Genetic engineering just speeds up this process and can predict an outcome with greater regularity.

What Are the Disadvantages of Genetic Engineering?

1. The nutritional value of foods can be less.

When animals grow, and mature quickly, the nutritional value of that product can be reduced. This can be seen in poultry products today with the white striping that is found in meat products. That striping is a fat deposit that was created, often in the breast meat, because of the rapid growth of the bird. In chickens, Good Housekeeping reports that this can increase the fat content of the meat consumed by over 220%. At the same time, the amount of protein that is received is also reduced.

2. Pathogens adapt to the new genetic profiles.

Genetic engineering can create a natural resistance against certain pathogens for plants and animals, but the natural evolutionary process is geared toward creating pathways. Bacteria and viruses evolve a resistance to the resistance that is created by the genetic engineering efforts. This causes the pathogens to become stronger and more resistant than they normally would be, potentially creating future health concerns that are unforeseen.

3. There can be negative side effects that are unexpected.

Genetic engineering is guaranteed to make a change. Many of those changes are positive, creating more and healthier foods. Some of those changes, however, can be negative and unexpected. Making a plant become more tolerant to drought might also make that plant become less tolerant to direct sunlight. Animals may be modified to produce more milk, but have a shortened lifespan at the same time so farmers suffer a greater livestock.

4. The amount of diversity developed can be less favorable.

At some point, genetically engineered plants and animals make it “into the wild” and interact with domestic species. This results in a crossing of “natural” and “artificial” organisms. The engineered organisms often dominate, resulting in only a modified species over several generations, reducing the diversity that is available.

5. Copyrighted genetic engineering can have costly consequences.

Many companies copyright their genetic engineering processes or products to maintain their profitability. If a farmer plants genetically modified crops and the pollination process causes another farmer in the field over to have those modified crops grow, there have been precedents for legal actions against the “unauthorized” farmer. This can have several costly consequences, from fewer farmers wanting to work to a higher cost for the seeds that are planted.

6. This knowledge and technology can be easily abused.

At the moment, genetic engineering in humans is being used to treat specific disorders that threaten the health or wellbeing of individuals. In time, the approach in humans could be like what is already being done with plants and animals. Genetic engineering can change specific traits, which could create human outcomes that are ethically questionable or easily abused.

When you use a simple machine to do work, ________.
A
distance increases and force decreases

B
distance and force both increase

C
distance and force both decrease

D
distance decreases and force increases

Answers

Answer:

distance decreases and force increases

Explanation:

Simple machine means less power Hence it will require more force.Hence distance will decrease with respect to force and force will decrease

When we use a simple machine to do work, the distance decreases, the force increases. Hence, option D is correct. Because, these parameters are in inverse proportion.

What is force?

Force is an external agent acting on a body to change its motion. There are various kinds of force such as frictional force, magnetic force, gravitational force etc.

Work done is the effectiveness of the machine to use the force to make the maximum displacement. Work done is the product of force and distance.

W = F.ds

As per this relation, the force acting on large distance makes greater work done. However,

F = W/ds.

Hence, as the distance increases, the force is decreasing. Therefore, option D is correct.

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How long will it take a traveling 350m/s to go a distance of 1400m?

Answers

Answer:

6 hours

Explanation:

pls brailiest

It will take 490000 seconds which is 136.111 hours. Also can be described as 5.6 days.
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