Mathematics College

How much charge is needed to repel another charge of 9.9 x 10^-6 N when they are 200m apart? Please help meee I really can't understand Coulomb's Law : (

Answers

Answer 1

Answer:

The charge needed will be [tex]q=6.6\: \mu C[/tex]

Step-by-step explanation:

The equation of the electric force is given by:

[tex]F=k\frac{qQ}{r^{2}}[/tex]

We have the force [tex]F = 9.9 10^{-6}\: N[/tex]  and the distance r = 200. k is the Coulomb constant. Q and q are the charges.

We assume we have the same charge of the particles,  so we have:

[tex]q^{2}=\frac{Fr^{2}}{k}[/tex]

[tex]q^{2}=\frac{9.9*10^{-6}200^{2}}{9*10^{9}}[/tex]

[tex]q=6.6*10^{-6}\: C[/tex]

Therefore, the charge needed will be [tex]q=6.6\: \mu C[/tex]

I hope it helps you!

Related Questions

HELP ME PLEASEEE DUE IN 2 MINS
[tex] \frac{ 1}{2 } \: \: and \: \frac{4}{5} [/tex]
​

Answers

Answer:

1.3 meters

Step-by-step explanation:

1/2 + 4/5 = 13/10

13/10 = 1 3/10

1 3/10 = 1.3

Which expression is equivalent to x2−12x+36?
a (x+6)2

b (x+12)(x−3)

c (x+6)(x−6)

d (x−6)2 please help me figure this out

Answers

Answer:

(x-6)(x-6) or (x-6)^2

Step-by-step explanation:

What is 3/5 divided by 3/4

Answers

3/5 *4/3

1/5*4/1=4/5

=.8

hope it helps

3/5 x 4/3 = 12/15
That can be simplified to 4/5

Hello pls help me with two of these questions;)

Answers

Answer:

1-A-15

2-C

Step-by-step explanation:

7-21 is an increase by 3 times, so 5*3=15

The second is kinda blurry, so it's a little hard to explain.

Jimmy estimates that a pitcher holds 4.5 liters of liquid. It actually holds 4.8 liters. What is the percent error between his estimate and the actual volume of the pitcher?
A. 1/3%
B. 1 1/3%
C. 6 1/4%
D. 6 2/3%

Answers

Answer:

the answer is 6 1/4%. I hope it helps!

Swimming pool was 9 meters wide with an area of 90 square.What is the length of the pool?

Answers

Answer:

If the area is 90 square meters then, the answer is 10 meters long (length.)

Step-by-step explanation:

The angles of a triangle add up to 180 degrees.

The second angle is 20 degrees larger than the smallest angle.

The third angle is 3 times as big as the smallest angle.

Find the measure of the smallest angle (in degrees)

Answers

Answer: 32 degrees

Step-by-step explanation:

small angle : x

middle angle: x + 20

large angle: 3x

Form an equation: 5x + 20 = 180

5x = 180 - 20

5x = 160

x = 160/5

x = 32

estimate the product of 26.4×2.7​

Answers

Answer:..

Step-by-step explanation:

Answer:

Step-by-step explanation:

okay, 26.4*2.7 = 26*3 (when estimated)

26*3=78(or just somewhere around 70)

Solve 15 < 4x on a number line

Answers

Answer:

that shall answer 15 < 4x on a number line

Step-by-step explanation:

view image for more clarity

Find the circumference of the circle. Use 3.14 for . Round to the nearest hundredth, if necessary.
12.5 in.


The circumference of the circle is about
inches.

Answers

Answer: i got 78.54

rounded is 78.5

hope that helps

lol,j,bhkgkjhkhkhkhukgiuguk

Answers

Answer:

wioajfcskaljfcksjhnfkmdesdn,k  obviously

Step-by-step explanation:

find the equation of the line containing the points shown​

Answers

Answer:

y= 6x - 22

Step-by-step explanation:

(4,2) and (5,8)

m= (y2-y1)/(x2-x1)

m= (8-2)/(5-4)

m= 6

y-y1= m(x-x1)

y-2= 6(x-4)

y-2= 6x-24

y= 6x - 22

Mark brainliest pls!

A person is walking at a rate of 9 feet every 4 seconds.
(b) Given the rate in (a), how far would this
person travel in 14 seconds

Answers

Answer:

31.5 feet

Step-by-step explanation:

2.25 feet every second

Elizabeth has $72 to spend on painting supplies needed to repaint her house. Rollers
cost $4 each, and paintbrushes are $3 each. She needs at least 15 rollers and
paintbrushes combined and wants at least five of each.

Answers

4(15) + 3x = 72
60 + 3x = 72
3x = 12
x = 4
Answer: 4 paintbrushes

Write the improper fraction as a mixed number 1879/12

Answers

The answer is 156 7/12

1879/12= 156.583

156* 12= 1872

1879-1872= 7

The answer is 156 7/12. in a mixed number

Need help On question 1. for geo

Answers

Triangle 1 :

Classify by angle = obtuse (one angle in the triangle is obtuse)

Classify by sides = isosceles (has two equivalent sides)

Triangle 2 :

Classify by angles = right (an angle in the triangle is equal to 90°)

Classify by sides = scalene (none of the sides in this triangle is equal)

Simplify the fractions using the greatest common factor and division 4/8 =

Answers

Answer:

2/4

Step-by-step explanation:

Bernie left home, riding his bike at a rate of 15 miles per hour. Charlie left 1 hour later, biking at a rate of 20 miles per hour. How long will it take Charlie to catch up to Bernie?

Answers

It will take Charlie 3 hours to catch up to Bernie!! :))))

Decrease 60 by 0.75 of itself ​

Answers

Answer:

15

Step-by-step explanation:

(0.75 of 60)  

0.75 * 60 = 45

(decrease 60 by answer)

60 - 45 = 15

yes, 15
60 x .75 =45
60-45 =15

18% of the the students at a school are in year 8 and 16% of the students are in year 9. If the school has 126 tera 8 students, determine the number of year 9 students.​

Answers

Answer:

112

Step-by-step explanation:

The general form of all percentage questions is: the chunk= (some percentage) (of the whole), or c=p*w

We know that 18% of students are 8th grade and that is 126 students, so p = 0.18 and c=126 (126 students are 18% of the whole school)

126 = (0.18)w, divide both sides by 0.18

126/(0.18) = w = 700

9th graders are 16% of the school or 16% of 700 students

c = (0.16) 700 = 112 students

help me plis What is the exact measurement of the line segment? A. B. C. D.

Answers

Answer: where is the line segment

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

What are the values of s and t?

Answers

Answer:

I think t is 72, because the angle looks equal to the known degree, which is 72. And since all the degrees have to add up to 180, 72+72 is 144 and 180-144 is 36. So angle s is 36 degrees.

3+(55-111)/25 equals what

Answers

Answer:

0.76

Step-by-step explanation:

3+(55-111)/25

=3+(-56)/25

=3+ (-2.24)

=0.76

Answer:

3+(55-111)/25= 0.76

Step-by-step explanation:

Using PEMDAS, you solve 55-111 which is -56

Then you divide -56 by 25 because it is the fourth step, you get -2.24

Add three to -2.24 to get 0.76

If you round UP to the nearest tenth, it will be 0.80

If you round DOWN to the nearest tenth, it will be 0.70

what is clairouts equation​

Answers

In mathematical analysis, Clairaut's equation is a differential equation of the form where f is continuously differentiable. It is a particular case of the Lagrange differential equation


1. 2a+b-c
A. O
B. 1
C. 3
D. 4​

Answers

Answer:

i think C correct me if im wrong pls

Step-by-step explanation:

The graph shows the relationship between a sphere's radius and volume.



Select all the statements that are true about the relationship.



Group of answer choices

If the radius doubles, the volume doubles.

If the radius doubles, the volume becomes about 4 times bigger.

If the radius doubles, the volume becomes about 8 times bigger

The relationship is linear.

The relationships is not linear.

Answers

Answer:

C and D

Step-by-step explanation:

Answer:

C and e

Step-by-step explanation:

find the values of x and y

Answers

Answer:

x = 60 and y = 60

Step-by-step explanation:

Those are all equilateral triangles with the same angles.

A party mix is made by adding nuts that sell for $2.50 per kg to a cereal mixture that sells for $1 per kg. How much of each should be added to obtain 40 kg if a mix that will sell for $1.30 per kg?

Answers

Answer:

40kg

Step-by-step explanation:

x + y = 60, y = 60 - x

x(2.50) + y(1) = 60(1.50)

Substitute:

2.50 x + 60 - x = 90

1.50x = 30

x = 20 kg

y = 40 kg

Pls answer I really need help with this pleasseeee

Answers

Answer:

12.3

Step-by-step explanation:

Helpppp i dont understand

Answers

It’s sideways, but I solved it
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