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
Scrat [10]
3 years ago
13

36. Two point charges are separated by 6 cm. The attractive force between them is 20 N. Find the force between them when they ar

e separated by 12 cm. (Why can you solve this problem without knowing the magnitudes of the charges
Physics
1 answer:
Alex3 years ago
5 0

Answer:

The force between two charges when they are separated by distance 12 cm is  5N  

Explanation:

Here lets us consider two charges q_{1} and q_{2} .

Let F_{1}  be the force between them when they are separated by distance 6 cm

     F_{2} be the force between them when distance between them = 12 cm

            F_{1} = \frac{KQ_{1}Q_{2}}{6^{2}}  =20 N     ..................1

            F_{2} = \frac{KQ_{1}Q_{2}}{12^{2}}                 ...................2

 Dividing both equations , we get

        \frac{20}{F_{2}} =\frac{12^{2}}{6^{2}}

    F_{2} = 5N.

Here we need not to know the values of charges , since they get cancelled while dividing.

You might be interested in
What is electropower​
OLEGan [10]

Answer:

electricity

Explanation:

8 0
3 years ago
Read 2 more answers
What is the mass of a 3,500-N rock?
Viktor [21]
350kg because to get Newton’s it’s mass x Gravity, earths gravity is x10 so 3500 divided by 10 is 350
6 0
3 years ago
Can someone answer this 2 correctly please
ahrayia [7]

Answer:

I know the first one is C.) 4J. I don't know of the answer for the second oneis suppose to be in N/m form? but I got

2,500N/m

5 0
3 years ago
Can a metallic sphere be charged without rubbing​
morpeh [17]
We need to charge a metal sphere positively without touching it. This can be achieved using electrostatic induction.
6 0
3 years ago
When a board with a box on it is slowly tilted to a larger and larger angle, common experience shows that the box will at some p
Shtirlitz [24]

Answer:

the reason for the acceleration month that the coefficient of kinetic friction is less than the coefficient of satic frictionExplanation:

This exercise uses Newton's second law with the condition that the acceleration is zero, by the time the body begins to slide. At this point the balance of forces is

    fr- w || = 0

The expression for friction force is that it is proportional to the coefficient of friction by normal.

    fr = μ N

When the system is immobile, the coefficient of friction is called static coefficient and has a value, this is due to the union between  the surface, when the movement begins some joints are broken giving rise to coefficient of kinetic friction less than static.  

In consequence a lower friction force, which is why the system comes out of balance and begins to accelerate.

      μ kinetic <μ static

  In all this movement the normal with changed that the angle of the table remains fixed.

Consequently, the reason for the acceleration month that the coefficient of kinetic friction is less than the coefficient of satic friction

3 0
3 years ago
Other questions:
  • Precipitation is most likely occurring at A because it is located
    13·1 answer
  • Which data set has the largest range? A. 55, 57, 59, 60, 61, 49, 48 B. 21, 25, 14, 16, 29, 22, 20 C. 12, 15, 16, 19, 18, 15, 27
    7·1 answer
  • An unstable nucleus results from too many or too few A) electrons. B) neutrons. C) protons. D) radons.
    8·1 answer
  • Which of the following would not increase the velocity of a sound wave in air? A. lowering the humidity of the air. B. increasin
    5·2 answers
  • The frequency of a sound wave in water is 15,000 Hz, and the sound wave travels through water at a speed of 1,500 m/s. What is t
    8·1 answer
  • At a particular instant the magnitude of the momentum of a planet is 2.05 × 10^29 kg·m/s, and the force exerted on it by the sta
    6·1 answer
  • what dangers higher voltages have for humans whose resistance changes depending on hand lotion, rubber gloves, other types of gl
    5·1 answer
  • An arrow is launched from P with a speed Vi = 25m / s. Knowing that the target Q is 10 m high, and the arrow reaches it as shown
    5·1 answer
  • WILL MARK BRAINLIST IIF U GIVE ME CORRECT ANSWERS
    15·2 answers
  • If we decrease the amount of force, and kelp all other factors the same, what will happen to the amount of work?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!