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:

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Related Questions

how many neutrons are in the stable isotope of rhenium

Answers

Properties of Rhenium-185 Isotope:

Properties of Rhenium-185 Isotope: RHENIUM-185

Neutron Number (N) 110

Atomic Number (Z) 75

Mass Number (A) 185

Nucleon Number (A) 185

25 more rows

Someone pls help me I will make you brain

Answers

Answer:

C. negative global warming

If there is H2O and O2 what it's going to be

Answers

Answer:

o232

Explanation:

2. What are core elections? How are they represented in the shorthand electron configurations?

Answers

Answer:

In shorthand electron configuration, the electron configuration starts with the symbol of the noble gas in the previous period, followed by the additional configuration of the electrons for the given element. For example, aluminum has the atomic number 13, which is the number of protons in the nuclei of its atoms.

Explanation:

Hope this helps.

Which of the following areas would most likely see the largest amount of heat
flowing up towards the surface of Earth?

a. any area that just experienced an earthquake

b. an area of active volcanoes

c. all areas around the equator

d. heat never flows to the surface of the earth

Answers

Answer:

c. because all countries around the equator experiences heat

Which term names a property of a mineral? (I'm sorry if this says Chem. I couldn't find Sci. on the list)

Answers

Answer:

Naturally occurring

Explanation:

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Answer:

Streak

Explanation:

Streak is the microscopic remains of minerals in powder form after being rubbed with porcelain plates. The streaks do not have orderly arranged lattice structure or unit cells.

They are randomly arranged and microscopic size powders. The streak of minerals cannot be distinguished easily as it mostly appears similar for all minerals.

Thus, among the given options streak is one in the property of minerals. We can rely upon streaks as it cannot be easily affected by impurities.

How many total atoms are in this formula?

2MgSO4

Answers

12 atoms

2(Sx1 Mgx1 Ox4)

Why are some ions known as poly atomic ions?

Answers

Answer:

NH4+ ammonium ion hydroxide ion

SO32- sulfite ion perchlorate ion

NO3- nitrate ion chlorate ion

NO2- nitrite ion chlorite ion

Answer this question will give brainliest​

Answers

Answer:

heat energy

Explanation:

heat give energy so heat carriers energy

How did james Chadwick know that neutrons are neutral ?​

Answers

Answer:

In 1932, he tried similar experiments himself, and became convinced that the radiation ejected by the beryllium was in fact a neutral particle about the mass of a proton. ... Chadwick also noted that because the neutrons had no charge, they penetrated much further into a target than protons would.

Explanation:

microfilaments are composed of ____________ in ____________ arrangement.

Answers

Explanation:

microfilaments are composed of repeating actin subunits in a thin double-helix arrangement.

Write the law of conservation of matter…
(Please Answer fast)

Answers

Answer:

The Law of Conservation of Matter states that matter cannot be created or destroyed. In a physical change, substances can change form, but the total mass remains the same. In a chemical change, the total mass of the reactants always equals the total mass of the products. Materials.

Law of conservation of matter is that matter cannot be created or destroyed. In chemical equations, the mass of the reactants must be equals to the mass of products.

Which is a chemical property of hydrogen?
A.
It is a light gas.
B.
It is a combustible gas.
C.
It is a colorless gas.
D.
It has a boiling point of -252.87°C.
E.
It is a good conductor of electricity.

Answers

Answer:

C

Explanation:

It is a colorless

I hope you help by my answee

B, the other answers are physical properties of hydrogen

jude uses me in a beam with loads of others like me to find new materals

Answers

Answer:

good morning I am going home with 6

PLEASE HELPP!!!!
What kind of metal is Cu?
Alkaline Earth Metal
Alkali Metal
Transition Metal

Answers

Answer:

transition metal

Explanation:

Answer:

Copper is a Transition metal.

Explanation:

Use the periodic table website! It tells you what kind of metals the elements are and if they are metals or nonmetals.

Website: ptable.com

identify the number of bonding pairs and lone pairs of electrons in water.

Answers

Answer:

2 bonding pairs and 2 lone pairs

How do the metals in group 1 compare with the transition metals?

Answers

Answer:

Group 1 metals and transition metals are different from each other, mainly based on the colour of the chemical compounds that they form. The key difference between group 1 metals and transition metals is that the group 1 metals form colourless compounds, whereas the transition metals form colourful compounds.

Can someone please help me

Answers

Explanation:

Solids have a definite shape and volume. Liquids have a definite volume, but take the shape of the container. Gases have no definite shape or volume.

The kinetic theory of matter (particle theory) says that all matter consists of many, very small particles which are constantly moving or in a continual state of motion.

What charge would each element obtain when it becomes an ion? a) aluminum e) lodine
b) lithium c) barium f) phosphorus g) sulfur d) bromine h) magnesium​

Answers

Aluminum forms an ion of +3 while the bromine atom form an ion of -1.

What is an ion?

An ion is an atom which has lost/gained one or more electrons. The ion will be positive if an electron is lost and will be negative when an electron is gained by the specie.

The ions formed by each of the species is;

Al = +3I = -1Li = +1Ba= +2P = -3S = -2Br = -1Mg = +2

Learn more about ions:https://brainly.com/question/1782326

helppppppppppppppp please please please

Answers

Answer:

For your first one it is C and your second one is D how deep is the lake.

Its going to be disicult to swim down at the bottom of a lake with all your class just to see how deep it is, so its better to make a model

The correct answer is c

before making a covalent bond, where do the atom's electrons spend most of their time?

Answers

Answer:

Before bonding, the atom's electrons spend most of their time around the nuclei of each atom. Once bonded, the electrons spend most of their time between the two nuclei

This painting is showing the actions of American colonists at the 1773 protest known by what name? A) The Plymouth Rocks B) The Boston Massacre C) The Boston Tea Party D) The New York Draft Riots

Answers

that will be the Boston tea party

Explanation: C) the Boston tea party

I did the quiz

What is empirical evidence
A retest of experimental results to make them reliable

Knowledge gained by observation or measurement

A prediction of test results before an experiment

A conclusion derived from evidence and logical reasoning

Answers

The correct answer is b

According to the kinetic molecular theory, the pressure of a gas increases as
the number of moles of gas molecules increases because —

Answers

Answer:

The volume of the gas therefore becomes large as the temperature of the gas increases, the frequency of collisions with the walls of the container must increase. This, in turn, leads to an increase in the pressure of the gas.

Explanation:

hope it helps.

what kind of chemical processes are used to create these synthetic products

Answers

The series of chemical reactions that are used to change natural resources into synthetic products is called chemical synthesis. To make a "natural" product, the natural resource is not chemically changed as much. One example is a wooden chair.

Aluminium is a natural material that is widely utilised in a variety of sectors and may be converted into a variety of synthetic goods via various chemical processes.

The following are some examples of synthetic compounds created from aluminium and the accompanying chemical processes:

Aluminium Foil: Aluminium foil is a thin, flexible sheet of metal.Aluminium Cans: Aluminium cans used for beverage packaging are created through a process known as can forming. Aluminium alloys are synthetic goods formed by mixing aluminium with additional elements such as copper, zinc, magnesium, or silicon.

Thus, these are only a few examples of synthetic goods generated from aluminium and the chemical processes that produce them.

For more details regarding synthetic goods, visit:

https://brainly.com/question/29675216

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Your question seems incomplete, the probable complete question is:

What synthetic products are derived from the natural resource aluminum? What kind of chemical processes are used to create these synthetic products?

How many moles of HCl will be produced when 34.56 g of AIC3 are reacted according to this chemical equation​

Answers

Answer:The answer to your question is It will be formed 0.39 moles of H₂

Data

moles of H₂ = ?

moles of HCl = 0.78

moles of Zinc = excess

Balanced chemical reaction

             2 HCl  +  Zn  ⇒  1 H₂  +  ZnCl₂

Process

Explanation:

1.- Use proportions to solve this problem. Consider the coefficients of the balanced reaction.

              2 moles of HCl ---------------------- 1 mol of H₂

              0.78 moles of HCl -----------------  x

              x = (0.78 x 1) / 2

- Simplification

             x = 0.78 / 2

- Result

             x = 0.39 moles of H₂

Is CH4 a molecule, compound, or both?

Answers

Compound, because is made from more than one element


This will always help you= A molecule is formed when two or more atoms join together chemically. And a compound is a molecule that contains at least two different elements.

I will brainless who can answer this all pleaseeeeejvv​

Answers

Answer:

White-Blue-Red-Yellow-Orange

Explanation:

The sun emits all colors of the rainbow more or less evenly.

⚠️ I'm not 100% sure but for sure there is White ⚠️

Which statement(s) correctly compare the masses of protons, neutrons, and electrons? Select two options.

1. Protons and neutrons have similar mass.
2. Protons and electrons have similar mass.
3. Neutrons and electrons have similar mass.
4. Protons are smaller than a neutron or an electron.
5. Neutrons are smaller than a proton or an electron.
6. Electrons are smaller than a proton or a neutron.

Answers

Answer:

6 Electrons r smaller than a proton or a neutron

Answer:

1st and last one

Explanation:

De quien es el modelo matemático

Answers

Answer:

si

Explanation:

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