Hai điện tích q1 = 8*10^-8C, q2 = -8*10^-8C đặt tại A,B trong không khí, AB=4cm. Xác định cường độ điện trường tại C với:
a) CA = CB = 2cm
b) CA= 8cm, CB = 4cm
c) CA = CB = 4cm
d) CA = 3cm, CB = 5cm

Answers

Answer 1

Answer:

its b cuz ca when u add the b its a Explanation:


Related Questions

Using the solubility curvechoose all of the statements that are correct

Answers

Explanation:

where are the statements

An object is pulled northward at 20 N and southward at 15 N. What is the direction and force of the object?

Answers

Answer:

It moves northward at 5N

Explanation:

What is happening when an oxygen molecule is formed from two separate oxygen atoms?

Answers

Two from each oxygen atom. For examples of covalent bonding are water (H2O), and carbon dioxide (CO2). Covalent compounds are mostly gases or liquids with low melting points.

A student holds an ice cube in her hand. Which of the following best describes the movement of heat that will happen?

Answers

Answer:

The ice will melt and her hand will get cold

Explanation:

Which of these are part of the electromagnetic spectrum?

Question options:

gamma rays


visible light


microwaves


sound waves


radio waves

Answers

Answer: A, C, E

Explanation:

Gamma rays, Microwaves, and Radio waves

everything except visible light.

The mineral quartz has a chemical formula of SiO2. What is the formal name
for this compound?

Answers

Answer:

Silicon Dioxide

Answer:

Silicon dioxide

Explanation:

A book is resting on the floor. It has 25 J of energy. A student lifts the book and places it on the top shelf of a bookshelf. The student uses 200 J of energy to lift the book onto the shelf. How much energy does the book have at the top of the shelf?
A.Exactly 25 J
B. About 225 J
C. At least250 J
D.Negative 175 J PLSS QUICK (3 minutes at most) ILL GIVE 70 POINTS AND BRAINLIEST (FOR CORRECT ANSWER)

Answers

Answer and Explanation:

A. Exactly 25 J.

This is because the 25 J of energy that is holding down the book will always be the same, unless another force is being applied to hit to either make it heaver for a combined force of J energy, or something is lifting it, which will subtract the force of J of energy whilst moving.

#teamtrees #PAW (Plant And Water)

I REALLY NEED HELP!!

The velocity of a car increases from +4.0 m/s to +16.0 m/s
in a time period of 4.0 s. What was the average
acceleration?

Answers

Answer:

Explanation:

Although we do have an equation for this in terms of one-dimensional motion, it's easy enough just to use the mathematical definition of acceleration:

[tex]a=\frac{v_f-v_0}{t}[/tex]  which says, in words, the acceleration of an object is equal to the objects final velocity minus its initial velocity, divided by the change in time. Since everything is given in m and s, our answer will be in m/s/s:

[tex]a=\frac{16.0-4.0}{4.0}[/tex] and

[tex]a=\frac{12.0}{4.0}[/tex] so

a = 3.0 m/s/s

how to do this please​

Answers

Answer:

  1) see the diagram below

  2) (b) the length of the wire being tested

Explanation:

1) An ammeter is connected in series with the circuit branch in which you want to measure current. "Conventional current" enters the positive terminal of the ammeter. (You can think of it as a voltmeter across a small resistor. The polarity of the voltage matches the polarity of the current.)

A voltmeter is connected in parallel with the circuit element of interest. Here, you want to measure the voltage across the wire, so the voltmeter is placed in parallel with the wire. The positive terminal of the voltmeter is connected to the end of the circuit element that has the higher (more positive) potential.

__

2) The wording of the problem tells you which variable is independent:

  "A varies with B" means the independent variable is B

Here, the independent variable is the length of the wire.

When the Asthenosphere transfers heat, what happens?

Convection Currents, Earthquakes, volcanic eruptions, or weathering?

Answers

The hot rock flows along the bottom of the lithosphere, transferring its heat to the cold rocks by conduction.

17. When people replace systems, even when they still work, this is an example of... *
A. Consumerism
B. Automation
C. Manual Labour
D. None of the above

Answers

I'm gonna have to guess B) Automation sorry if I get it incorrect

First off how is it automation, when the person who asked the question just said “when people REPLACE systems.” Automation is like the use of systems and machines. The person answered automation which is the toatal opposite of the answer, which is C, Manual labor. Manual labor is where humans work instead of the machines/systems.

So in simpler words......C.
Have a great day!

with well labelled diagrams , describe how a bicycle pump works​

Answers

Explanation:

this is almost similar to how a syringe works. when the pump is drown out, air in the barrel expands and pressure is reduced to below atmospheric pressure. the air from outside the pump is at high pressure so it flows past the leather washer into the barrel. at some point, the higher pressure in the tyre closes for valve.

when the pump handle is pushed in the air is forced into the tyre though the tyre valve which now opens

Describe how Newton's 1st Law of Motion is used on a daily basis at school.

Answers

Newton's first law of motion states that an object at rest remains at rest and an object in motion remains in motion with the same velocity unless acted upon by what we call an unbalanced force. The force of gravity pulling down is balanced by the force of my kitchen table pushing up on my cup of coffee.

The picture below shows a wheelbarrow. Using a wheelbarrow can make it easier to lift a heavy object by
A. changing the direction of the input force.
B. reducing the amount of input force needed to lift the object.
C. decreasing the distance over which the input force is applied.
D. reducing the weight of the object.

Answers

Answer:

B IS CORRECT

Explanation:

Name two things that Arjun and Diya did to get accurate measurements of the angles in their experiment

Answers

Answer:

i dont know them

Explanation:

What is the question. What angle?

how to calculate acceleration​

Answers

Answer:

Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2). Acceleration is also a vector quantity, so it includes both magnitude and direction.

Explanation:

hope it help mark me as brill please

Answer:

acceleration equals the change in velocity divided by time

Explanation:

NO LINKS OR UNUSEFUL ANSWERS
What is the trade off between the input and output forces when someone uses a screw?

Answers

It is the ratio of the output force to the input force. ... The trade-off is that more turns of the screw are needed to do the job because the distance over which the input force must be applied is greater.

how can juggling improve your hand eye coordination?​

Answers

Answer:

you can predict where the juggling ball is going to land and the move you hand to catch it

Explanation:

_______ is the process which causes magma to form.

Answers

Answer:

flux melting

Explanation:

Flux melting is the process that causes magma to form. Flux melting happens when water or carbon dioxide exists added to rock.

What is meant by Flux melting?

When rock is exposed to water or carbon dioxide, flux melting occurs. The rock melts at lower temperatures as a result of these substances. This causes magma to form where it had a solid structure before. Around subduction zones, flux melting also happens, much like heat transfer.

Flux melting happens in igneous petrology and volcanology when water and other volatile substances are added to hot solid rock, depressing the solidus. Flux is a material, such as salt, that produces a mixture with a metal oxide that has a low melting point (liquidus) in engineering and metallurgy.

To learn more about Flux melting, refer to:

https://brainly.com/question/24214679

#SPJ2

An atom's atomic mass (mass number) is its number of

Answers

Answer:

Is equal to the sum of the number of protons and neutrons in the nucleus.

Explanation:

Suppose that we replace the aluminum with a mystery metal and repeat the experiment in the video. As in the video, the mass of the metal is the same as that of the water. Room temperature is about 20∘C before the start of the experiment. The water heats up to 40∘C, and the mystery metal heats up to 80∘C. Compared to that of water, the heat capacity of our mystery metal is

Answers

Answer: b) one-third as great.

Explanation:

The options include:

a) three times greater.

b) one-third as great.

c) half as great.

d) two times greater.

e) the same.

Since the water heats up to 40°C and the room temperature is about 20°C before the start of the experiment, heat absorbed will be: (40°C-20°C).= 20°C

Since mystery metal heats up to 80∘C and the room temperature is about 20°C before the start of the experiment, heat absorbed will be: (80°C-20°C).= 60°C.

Therefore, based on the calculation, when compared to that of water, the heat capacity of our mystery metal is (20/60) = 1/3 one-third as great.

Eren Jagear supremacy? kind of.. rip? Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?​

Answers

sis i love the eren season 1-2-3-4 but the eren season 5?....... i just :')

Answer:

Explanation:

Aaron yogurt supremacy

a
400 12
M
b
290 12
с
The question below refers to the circuit shown in the image
--
12.0 y
If the voltage across the 400 resistor is 7 V, what is the voltage across the 290 Q resistor?
O 5V
O 7V
O 9V
O 12 V
1
2
3
4
5

Answers

Answer:

i would think c

Explanation:

BRAINLIEST TO THE CORRECT QUESTION

Answers

Answer:

the answer is B

visible light

Which of the following methods transmits a drug directly into the bloodstream?

Answers

Answer:

I think Intravenous transmits a drug directly into the bloodstream.

Hope this help! :)

Calculate frequency if wavelength is 35 m and wave speed is 546 m/s.
25.6 Hz
15.6 Hz
390 Hz
.06 Hz

Answers

The answer to your question is a 25.6 HZ

Which two types of energy are being produced in the picture?
A
electrical energy and light energy
B
electrical energy and sound energy
C
mechanical energy and light energy
D
mechanical energy and sound energy

Answers

Answer:

dion sanders

Explanation:c

GIVING BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 23pts-

Answers

d. and it’s not 23 points it’s 12

Calculate the weight of a 2.3 kg squirrel

Answers

Answer:

Lemme think rq

*inserts writing noises*

*insert intese thinking*

*insert big brain moment*

Well the weight IS 2.3 kg so I think the weight of a squirrel is 2.3 kg

Elements grouped as a column on the periodic table belong to a ______.

Answers

answer) group not sure
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