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
denis23 [38]
3 years ago
7

Two charges, Q1 and Q2, are separated by 6·cm. The repulsive force between them is 25·N. In each case below, find the force betw

een them if the original situation is changed as described.(a) The magnitude of charge Q1 is reduced to Q1/5. N(b) The distance between the charges is reduced to 2·cm. N(c) The magnitude of charge Q2 is increased to 5Q2 and the distance is increased to 30·cm. N
Physics
1 answer:
Misha Larkins [42]3 years ago
3 0

Answer:

a) 5 N b) 225 N c) 5 N

Explanation:

a) Per Coulomb's Law the repulsive force between 2 equal sign charges, is directly proportional to the product of the charges, and inversely proportional to the square of  the distance between them, acting along  the  line that joins the charges, as follows:

F₁₂ = K Q₁ Q₂ / r₁₂²

So, if we make Q1 = Q1/5, the net effect will be to reduce the force in the same factor, i.e. F₁₂ = 25 N / 5 = 5 N

b) If we reduce the distance, from r, to r/3, as the  factor is squared, the net effect will be to increase the force in a factor equal to 3² = 9.

So, we will have F₁₂ = 9. 25 N = 225 N

c) If we make Q2 = 5Q2, the force would be increased 5 times, but if at the same , we increase the distance 5 times, as the factor is squared, the net factor will be 5/25 = 1/5, so we will have:

F₁₂ = 25 N .1/5 = 5 N

You might be interested in
What work is the person doing doing to the box if the box is just being held and it is not moving?
kobusy [5.1K]
Allowing for a platform in which the box holds potential energy
7 0
3 years ago
To distinguish between properties of the two major types of supernovae: massive star supernovae and white dwarf supernovae. all
const2013 [10]
<span>In my opinion, I myself believe that there are only two supernovae. The first is the white dwarf. It makes sense because if something is too big for its size, it will "explode". Just like a basketball with too much air. Massive star supernovae is like something has reached it's full potential and cannot get any bigger or better.</span>
3 0
3 years ago
What is the mass in kg of a leopard in a tree if the tree branch is 36 m up and the leopard's gravitational potential energy is
ElenaW [278]

Answer:

83.3kg

Explanation:

GPE = m × g × h

GPE = mass of leopard × 10 × 36m

29988J = 360 × mass

mass = 83.3kg

5 0
3 years ago
What would be most useful to help make a simple compass a nonmetal bar,a round metal can,a small iron nail,or a Quartz needle
pav-90 [236]
Iron nail. the rest of those are not iron or some form of magnetic material.
5 0
3 years ago
Read 2 more answers
These types of electromagnetic waves are listed in order of increasing frequency:
xenn [34]

Answer:

B. X-rays

Explanation:

From the given choices, x-rays will have the highest energy of the given waves.

The energy of electromagnetic waves is highly dependent on their frequency and wavelength.

Electromagnetic waves with a high frequency and small wavelength will have higher energy compared to those with low frequency and high wavelength.

X-rays are one the most energetic waves on the periodic table. They have a very high frequency and low wavelength.

7 0
2 years ago
Read 2 more answers
Other questions:
  • According to the exercise principle of balance, a workout should __________.
    14·2 answers
  • Can a black light be used to charge a solar powered product
    14·1 answer
  • A 65-cm segment of conducting wire carries a current of 0.35
    12·2 answers
  • The amount of a good or service a
    10·1 answer
  • Keplers laws follow which law discovered by sir Isaac Newton
    6·2 answers
  • I need help :(((((((((((
    12·1 answer
  • What is a car's acceleration between 25 s and 30 s?
    14·1 answer
  • Is a bird sitting motionless on a perch, balanced or unbalanced?
    6·1 answer
  • Here is the picture of an aircraft, with the forces working on it shown. Identify the force that corresponds to the question mar
    10·2 answers
  • Take a close look at the energy transfers and transformations shown in the above diagram. Which type of energy is transformed in
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!