1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
saul85 [17]
4 years ago
14

If the distance between two positive point charges is tripled, then the strength of the electrostatic repulsion between them wil

l decrease by a factor of of how much?
Physics
1 answer:
vagabundo [1.1K]4 years ago
7 0
Coulomb's Law:
F=\frac{kq_1q_2}{r^2}
k is a constant
q1 and q2 are charges
r is the distance


F_1=\frac{kq_1q_2}{r^2}

the distance is tripled:
F_2=\frac{kq_1q_2}{(3r)^2}=\frac{kq_1q_2}{9r^2}


\frac{\frac{kq_1q_2}{9r^2}}{\frac{kq_1q_2}{r^2}}= \frac{r^2}{9r^2}=\frac{1}{9}

The strength of the electrostatic repulsion will decrease by a factor of 9.
You might be interested in
Shanti is riding on a train that is moving at a speed of 90 km/h. He is carrying a power cord for his phone that is 1.2 m long.
faltersainse [42]

Answer:equal to 1.2 m

Explanation: i took the test

3 0
3 years ago
Read 2 more answers
A rescue pilot drops a survival kit while her plane is flying at an altitude of 1.5 km with a forward velocity of 100.0 m/s. If
tresset_1 [31]

1750 meters.  
First, determine how long it takes for the kit to hit the ground. Distance over constant acceleration is: 
d = 1/2 A T^2
 where
 d = distance
 A = acceleration
 T = time 
 Solving for T, gives
 d = 1/2 A T^2
 2d = A T^2
 2d/A = T^2
 sqrt(2d/A) = T 
 Substitute the known values and calculate.
 sqrt(2d/A) = T
 sqrt(2* 1500m / 9.8 m/s^2) = T
 sqrt(3000m / 9.8 m/s^2) = T
 sqrt(306.122449 s^2) = T
 17.49635531 s = T 
 Rounding to 4 significant figures gives 17.50 seconds. Since it will take
17.50 seconds for the kit to hit the ground, the kit needs to be dropped 17.50
seconds before the plane goes overhead. So just simply multiply by the velocity. 
17.50 s * 100 m/s = 1750 m
3 0
3 years ago
Read 2 more answers
I need the science answer step by step
sukhopar [10]
What is the question
7 0
3 years ago
By the 2nd century BCE the ____ democratized astrology<br> A. Greeks<br> B. Egyptians<br> C. Romans
elena-14-01-66 [18.8K]

Answer:

A

Explanation:

3 0
3 years ago
Which of the following statements are true? Select all that apply.
beks73 [17]

Answer:

The following options are true based on the properties of electric field;

a) Electric field lines near positive point charges radiate outward.

b) The electric force acting on a point charge is proportional to the magnitude of the point charge.

d) In a uniform electric field, the field lines are straight, parallel, and uniformly spaced.

Explanation:

From option b) From coulomb's law F = Kq1q2r/r2

5 0
3 years ago
Other questions:
  • An unknown material has a mass of 2.75 g and a volume of 4 cm3. What is the density of the material? Round to the nearest tenth.
    8·2 answers
  • What happens when you drop a sugar cube into a mug of hot tea
    14·2 answers
  • My fifth time asking this, but can someone please help me with these four????
    8·1 answer
  • An electric field of magnitude 2.35 V/m is oriented at an angle of 25.0° with respect to the positive z-direction. Determine the
    12·1 answer
  • What is the device used to measure a potential difference in a circuit called?
    7·2 answers
  • A loaded flatbottom barge floats in fresh wa-ter. The bottom of the barge is 4.09 m belowthe water line. When the barge is empty
    11·1 answer
  • Question 12 of 20
    9·1 answer
  • Water ______________ easier in the mountains because there is less air pressure.
    14·1 answer
  • An object is moving in a straight line with a constant acceleration. Its position is measured at three different times, as shown
    5·1 answer
  • What does RADAR stand for?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!