Hai hạt bụi trong không khí cách nhau 3cm mỗi hạt mang điện tích -9,6.10 mũ -13C. A )Tính lực đẩy tĩnh điện giữa hai hạt
B ) tính số electrong dư trong mỗi hạt bụi biết diện tích củ mỗi electrong -1,6.10 mũ -19C

Answers

Answer 1

Answer:b

Explanation:


Related Questions

Tell me the answer what will be in blanks​

Answers

Answer:

what do you mean by blanks??

Explanation:

i don't get

it

Answer:

ikoon

Explanation:

i think so it ikoon

why is the pressure in the bottom of the pacific ocean much bigger than near the surface

Answers

Answer:

increase in hydrostatic pressure

Explanation:

he force per unit area exerted by a liquid on an object. The deeper you go under the sea, the greater the pressure of the water pushing down on you. For every 33 feet (10.06 meters) you go down, the pressure increases by one atmosphere .

Brainliest pls

Why does the magnitude of the resultant force increases once the box start moving?

Answers

proportional to the variation of the linear momentum

(hope this helps) :)

I NEED THE RIGHT ANSWER ASAP IT NEEDS TO BE 100% ACCURATE NO LINKS!!! Which type of force will an object move towards?
1: weakest
2: net
3: balanced
4: strongest
this is a Science question

Answers

Answer:

Strongest

Explanation:

Weak forces do not possess significant strength to pull an object. Net forces is the sum of all forces acting on an object. Balanced forces cancel each other out to have no pull whatsoever. S


Consider the diagram of a pendulum's motion shown above. A pendulum can be used to model the change from potential energy
to kinetic energy and back to potential energy. Locate the place in the diagram where kinetic energy is the greatest.
A.point A
B.point B
C.point c
D.both points A and B

Answers

Answer: D

Explanation: Potential stores Kinetic Energy so, Point C will have Kinetic turned into Potential.

Answer: the answer is D

Explanation:

how long does it take for a pap smear to come back

Answers

it takes 1 to 3 weeks

Help asap please thank you

Answers

Answer:

1. 5 m/s

2. 5 m/s/s

Explanation:

1. 50 - 5 = 45

45/9 = 5

2. 25 - 0 = 25

25/5 = 5

hope this helps!

The Red one is wrong also the blue mark means nothing

Answers

Answer:

it is c

Explanation:

the car is moving back to its original position

Jonathan in his motorcycle is going 70 miles per hour. How long would he take to go to a city 200 miles away?

Answers

Answer:

28.57 hours

Explanation:

The time taken by the motorcycle to reach the city can be found by using the formula

[tex]t = \frac{d}{s} \\ [/tex]

d is the distance

s is the speed

From the question

d = 200 miles

s = 70 miles / hour

We have

[tex]t = \frac{200}{7} \\ = 28.571428 \\ [/tex]

We have the final answer as

28.57 hours

Hope this helps you

Explain how pressure can be used to
change the state of matter

Answers

Answer:

Physical conditions like temperature and pressure affect state of matter. ... When the pressure exerted on a substance increases, it can cause the substance to condense. Decreasing pressure can cause it to vaporize. For some types of rock, decreasing pressure can also cause them to melt.

How are forces, motion and energy related?

Answers

When an object is in motion, it changes its position by moving in a direction: up, down, forward, or backward. 3. Potential energy is stored energy. ... A force is a push or pull that causes an object to move, change direction, change speed, or stop.

What is the power of a diverging lens of focal length 0.4 m
a) 2.5
b) 3.5
c)-3.5
d)-2.5

Answers

Answer:

-2.5 is the answer to your question

I WILL MARK YOU IF YOU HELP

An object has a mass of 3.8 kg and a force of 11.6 N is applied to it. What is the acceleration that results?

Answers

F=ma
11.6=3.8*a
a=11.6/3.8
a=3.05m/s

A car travels 5 km towards north than turns right and travels 3km further, the car again turns right and travel 1 km and comes to rest. What is the
distance travelled and displacement of the car ?

Answers

The car traveled a distance of 9km and the displacement was 3km

if a dolphin swims at 15 m/s for 30 seconds, how far would the dolphin swim?

Answers

it would swim 30*15 metres, which is 450 metres.

The ………………………. is the substance/material travels through
1. Energy
2. Medium
3. Transverse
4. Longitudinal

Answers

Answer:

energy

Explanation:

the energy is the substance

Answer:

Medium

Explanation:

How does the mass of an object affect its acceleration?

Answers

Answer:

as the mass of an object is increased, the acceleration of the object is decreased & vice-versa.

Explanation:

hope this helps!

you push on box g that is next to box h, causing both boxes to slide along the floor, as shown in the figure. the reaction force to your push is

Answers

The reaction force to your push is the push of box G against you.

Newton's third law states that:

For every action, there is an equal opposite reaction.

So if an object x pulls or pushes an object y with a certain force, object y also exerts an equal and opposite force on object x.

Now, if you should push box G with a certain force, box G will exert an equal opposite force on you.

Hence, the reaction force to your push is the push of box G against you.

Learn more:  https://brainly.com/question/15280051

From rest, a car accelerates to 4.2 m/s2 for 10 seconds before winning the race. How far did it run?

Write the final answer in complete sentence.

Answers

Answer:

[tex] s = ut + \frac{1}{2} a {t}^{2} \\ u = 0 \\ a = 4.2 \: m {sec}^{ - 2} \\ t = 10sec \\ s = 0 + \frac{1}{2} (4.2) {10}^{2} \\ = 1.2 \times 100 \\\boxed{ s = 120 \: m}[/tex]

whats the answer
----------------------------

Answers

Answer:

repel each other

Explanation:

The magnitude of the charge of an electron is called... ... If a positively-charged glass rod is suspended so that it turns easily and another positively-charged glass rod is brought close to it, the two rods will... Repel each other.

a bubble of air of volume 1cm^3 is released by a deep sea diver at a depth where the pressure is 4.0 atmospheres. assuming its temperature remains constant (T1=T2), what is its volume just before it reaches the surface where the pressure is 1.0 atmosphere?

Answers

Answer:

hope this helps!

Explanation:

Volume of the air bubble, V1=1.0cm3=1.0×10−6m3

Bubble rises to height, d=40m

Temperature at a depth of 40 m, T1=12oC=285K

Temperature at the surface of the lake, T2=35oC=308K

The pressure on the surface of the lake: P2=1atm=1×1.103×105Pa 

The pressure at the depth of 40 m: P1=1atm+dρg

Where,

ρ is the density of water =103kg/m3

g is the acceleration due to gravity =9.8m/s2

∴P1=1.103×105+40×103×9.8=493300Pa

We have T1P1V1=T2P2V2

Where, V2 is the volume of the air bubble when it reaches the surface.

V2=

Interpret the data:

Make a claim that answers the scientific question.

Answers

umm what’s the data

what does auxiliary heat mean on a honeywell thermostat

Answers

Answer: Aux Ht or Auxiliary heat is the backup heat that turns on to help the compressor for first stage maintain your temperature setting. ... When the thermostat is in this position the compressor does not run, only the Emergency heat runs

Explanation:

Question:

What does auxiliary heat mean on a Honeywell thermostat.

Answer:

What does aux heat mean on a Honeywell system? Short for auxiliary heat, this system is designed to heat your home up quickly instead of waiting for the cold heat pump on the exterior of your home. Unfortunately, using the auxiliary heat is significantly more expensive than using your heat pump.

Explanation:

Aux on the thermostat stands for auxiliary heat. Auxiliary heat is the electric heat strip in your air handler that is supplemental heat. Emergency heat is the same thing as auxiliary heat. Auxiliary heat/ Emergency heat help the heat pump keep up when cold outside or the temperature differential on the thermostat is large.

Why does the sun have an up and down motion in the sky?

Answers

Answer:

The sun stays in its position at the center of our solar system. It doesn't rise and set. But it appears to rise and set because of the Earth's rotation on its axis

Explanation:

Hope this helps :)

What is an example of a chemical change

Answers

Answer:

Hello, Rotting, burning, cooking, and rusting are all further types of chemical changes because they produce substances that are entirely new chemical compounds. For example, burned wood becomes ash, carbon dioxide, and water. When exposed to water, iron becomes a mixture of several hydrated iron oxides and hydroxides.

Explanation:

I hape this helps remember to make someone smile today

I forgot to post the pic
But please help
just need answers​

Answers

Answer:

1.127,56,000m

2. 347,600,000

3. 384,000

4. 200000000

5.  16,000,000cm

6. 36,000,000cm

7. 125,000m long, 400m deep, 1,500m wide

8. 11.18km/sec

9. 5,400,000

10.  2g

11. 1,200 mg to 2700 mg

12.   158000 kg

13. 450000000 mg

14.    23,000g to 90,000g

15.   40,000 ML

16.  1,000 ML

17.  26,600 KL

18. 1,558,000 L

19. 60 ML

20. 0.947

Please help me. Brainiest to the correct answer.

A computer uses 40W of power. Calculate the current it draws when connected to a 230V mains supply.

Answers

Answer:

0. 174 A

Explanation:

This is similar to your other question

[tex]\boxed{\mathfrak{Power(P)=Voltage(V) \times Current(I)}}[/tex]

Voltage (V) = 230 VPower (P) = 40 W

=> 40 = 230 × I

=> [tex]\mathsf{I=\frac{40}{230} }[/tex]

=> I = [tex]\mathsf{\frac{4}{23} }[/tex]

=> I = 0.174 A

I is the current, the computer draws when connected to a 230 V mains supply, and it's SI unit is Amperes.

                               

[tex]\mathfrak{\overline{There\: you \: are!}}[/tex]

Explain how a book can have energy even if it is not moving.

Answers

A book can have energy by its words by how it’s talking in the book. honestly I’m not too sure that’s just how I would explain it

write the energy conversion when climbing a ladder​

Answers

A child climbing a ladder is transforming kinetic energy into potential energy.

Where are the field poles mounted on an alternator
A. Load
B. Shaft
C. Exciter
D. Rotor

Answers

Explanation:

(D) i think there you go have a good day

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