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
Lyrx [107]
2 years ago
5

What is the magnitude of the electric force between a proton and an electron when they are at a distance of 4.09 angstrom from e

ach other?
Physics
1 answer:
Zinaida [17]2 years ago
5 0

Answer:

F=1.38*10^{-9}N

Explanation:

According to Coulomb's law, the magnitude of the electric force between two point charges is directly proportional to the product of the magnitude of both charges and inversely proportional to the square of the distance that separates them:

F=\frac{kq_1q_2}{d^2}

Here k is the Coulomb constant. In this case, we have q_1=-e, q_2=e and d=4.09*10^-10m. Replacing the values:

F=\frac{8.99*10^{9}\frac{N\cdot m^2}{C^2}(-1.6*10^{-19}C)(1.6*10^{-19}C)}{(4.09*10^{-10})^2}\\F=-1.38*10^{-9}N

The negative sign indicates that it is an attractive force. So, the magnitude of the electric force is:

F=1.38*10^{-9}N

You might be interested in
A 65.0-Ω resistor is connected to the terminals of a battery whose emf is 12.0 V and whose internal resistance is 0.5 Ω. Calcula
Luda [366]

Answer:

a) 0.1832 A

b) 11.91 Volts

c) 2.18 Watt , 0.0168 Watt

Explanation:

(a)

R = external resistor connected to the terminals of the battery = 65 Ω

E = Emf of the battery = 12.0 Volts

r = internal resistance of the battery = 0.5 Ω

i = current flowing in the circuit

Using ohm's law

E = i (R + r)

12 = i (65 + 0.5)

i = 0.1832 A

(b)

Terminal voltage is given as

V_{ab} = i R

V_{ab} = (0.1832) (65)

V_{ab} = 11.91 Volts

(c)

Power dissipated in the resister R is given as

P_{R} = i²R

P_{R} = (0.1832)²(65)

P_{R} = 2.18 Watt

Power dissipated in the internal resistance is given as

P_{r} = i²r

P_{r} = (0.1832)²(0.5)

P_{r} = 0.0168 Watt

5 0
3 years ago
How do you reduce friction
choli [55]
To reduce friction between two surfaces, you have to
make the surfaces smoother. 

The best way to do that is to introduce a fluid between them,
like grease, oil, or air.
3 0
3 years ago
Some folded mountains result from the collision of continental plates. <br> a. True<br> b. False
alexgriva [62]
 it  true be cause when one goes under another the ground rise and makes what we call a mountain so therefore it is treu<span />
3 0
3 years ago
Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill?
Degger [83]
B. kinetic energy increases and potential energy decreases
5 0
3 years ago
Points A (-9,2), B (2,-9), and C (-9,-9) are placed in three different quadrants of a Cartesian coordinate system. Convert each
slavikrds [6]

Answer:

answer

Explanation:

5 0
3 years ago
Other questions:
  • what is the recommended daily dosage of flouride for a child over three years of age living in an area where drinking water is f
    13·1 answer
  • Air "breaks down" when the electric field strength reaches 3×106n/c, causing a spark. a parallel-plate capacitor is made from tw
    11·1 answer
  • the four forces shown have the same strength. which force would be most effective in opening the door?
    9·1 answer
  • Is radiation the transfer of energy in the form of particles
    12·1 answer
  • consider the following controls in an automobile in motion : gas pedal , brake , steering wheel . what are the controls in this
    8·2 answers
  • The table shows the potential energy and kinetic energy of a skier at two different positions on a hill.
    6·2 answers
  • The speed of the cart after 8 seconds of Low fan speed is
    13·1 answer
  • Evaluate the expression a+b when a=23 and b=45 . Write in simplest form
    13·1 answer
  • I'll give the brainliest!
    12·1 answer
  • 3. A bunny and a tortoise start a race from rest. The bunny accelerates at a rate ab for a time to until it reaches its
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!