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
tekilochka [14]
3 years ago
8

Two point charges each carrying a charge of + 4.5 E - 6 C are located 4.5 meters away from each other. How strong is the electro

static force between the two points, and is this force a repulsive force or an attractive force (k = 9.0 E9 Nm2/C2)
Physics
1 answer:
BARSIC [14]3 years ago
7 0

Answer:

0.009 N, repulsive

Explanation:

The electrostatic force between two electric charges is given by:

F=k\frac{q_1 q_2}{r^2}

where

k is the Coulomb's constant

q1 and q2 are the two charges

r is the separation between the two charges

In this problem, we have

q_1 =q_2 = +4.5\cdot 10^{-6}C are the two charges

r = 4.5 m is their separation

Substituting into the equation, we find

F=(9\cdot 10^9 Nm^2 C^{-2})\frac{(+4.5\cdot 10^{-6} C)(4.5\cdot 10^{-6} C)}{(4.5 m)^2}=0.009 N

Moreover, the force is repulsive. In fact, the following rules apply:

- When two charges have same sign, they repel each other

- When two charges have opposite signs, they attract each other

You might be interested in
The _______ is a factor that's affected by changes in the independent variable. A. dependent variable B. hypothesis C. experimen
Irina18 [472]
A. dependent variable

As the the independent variable (i.e. number of cats being sold) increases, the dependent variable (i.e. money made) will also increase. You can have 1,000,000 cats for sale and make no money, but you cannot make money without having sold some cats first.
Hope my weird example helped!
7 0
3 years ago
Read 2 more answers
During a test crash an airbag inflates to stop a dummy's forward motion. the dummy's mass is 75kg. If the net force on the dummy
Black_prince [1.1K]
F=ma
a=F/m
=825N/75kg
=825kg*m/75kg*s^2
=11m/s^2 in the direction of the force (ans)
4 0
3 years ago
A car has an acceleration of -5 m/s^2. Describe the car’s motion
AlladinOne [14]

Explanation:

because the acceleration is negative, this indicates a deceleration (or slowing down) . Hence we can say that:

The car is decelerating (slowing down), i.e its velocity is decreasing, at a constant rate of 5m/s².

7 0
4 years ago
Which kind of mechanical wave needs a source of energy to produce it?
Over [174]
I think the answer would be T<span>ransverse, Longitudinal, & Surface waves.

</span>
6 0
3 years ago
Read 2 more answers
A parallel plate capacitor is charged up by a battery. The battery is then disconnected, but the charge remains on the plates. T
larisa [96]

Answer:

a. Decreases

b. Increases

c. Remains the same

d. Increases

Explanation:

a. Capacitance is given by c= Ak€/d

where A is conductivity plate with Area

K is a constant

€ is dielectric with permittivity.

d is the distance

b. Potential difference is given by

V = Ed, since, the electric field remains the

same, the potential diterence also increases with increase in distance.

Since the capacitance depends upon the distance, and all the other factors are kept constant, the capacitance decreases.

c. Electric field remains the same because charge on the

plate remains the same.

d. since electric field remains the same and capacitance decreases, the energy increases.

E= 1/2c * Q^2

7 0
3 years ago
Other questions:
  • Lasers utilize concentrated light waves, focused precisely and used for certain applications. What are some common uses of laser
    8·2 answers
  • What human process are carbon sources that are upsetting the balance between CO to update via planets and CO2 released by living
    15·1 answer
  • Five grams of sugar is dissolved in 50 grams of water what is the mass of the water
    14·2 answers
  • Sleep is a component of which part of the health triangle
    15·1 answer
  • A ball is thrown vertically upward from the edge of a bridge 22.0 m high with an initial speed of 16.0 m/s. The ball falls all t
    9·1 answer
  • Two electrons are at rest and separated by a distance of 4.32 × 10-10 m. When they are released they accelerate away from each o
    6·1 answer
  • The centripetal force acting on a satellite in orbit
    8·2 answers
  • The tire on this drag racer is severely twisted: The force of the road on the tire is quite large(most likely several times the
    11·1 answer
  • Meher is riding a bicycle on a slope. explain the different motions taking place during this time​
    6·1 answer
  • What have we learned from the work of harlow shapley and others about the location of the sun in the milky way galaxy?.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!