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
IgorC [24]
3 years ago
8

Two electrons with a charge of magnitude 1.6×10-19 C in an atom are separated by 1.5×10-10 m, the typical size of an atom. What

is the electric force between them?
Physics
1 answer:
vesna_86 [32]3 years ago
4 0

Answer:

1.02\cdot 10^{-8} N, repulsive

Explanation:

The magnitude of the electric force between two charged particles is given by Coulomb's law:

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

where:

k=8.99\cdot 10^9 Nm^{-2}C^{-2} is the Coulomb's constant

q_1, q_2 are the two charges of the two particles

r is the separation between the two charges

The force is:

- repulsive if the two charges have  same  sign

- Attractive if the two charges have opposite signs

In this problem, we have two electrons, so:

q_1=q_2=1.6\cdot 10^{-19}C is the magnitude of the two electrons

r=1.5\cdot 10^{-10} m is their separation

Substituting into the formula, we find the electric force between them:

F=(8.99\cdot 10^9)\frac{(1.6\cdot 10^{-19})^2}{(1.5\cdot 10^{-10})^2}=1.02\cdot 10^{-8} N

And the force is repulsive, since the two electrons have same sign charge.

You might be interested in
A ball is thrown horizontally from the top of a tall cliff. Neglecting air drag, what vertical distance will the ball have falle
adell [148]

The relevant equation to use here is:

y = v0 t + 0.5 g t^2

where y is the vertical distance, v0 is initial velocity = 0, t is time, g = 9.8 m/s^2

 

y = 0 + 0.5 * 9.8 * 3^2

<span>y = 44.1 meters</span>

5 0
3 years ago
What do you mean by the mechanical advantage of a leaver is 4.​
Illusion [34]

Answer:

Explanation:

It means that you only need apply 1/4th of the actual force required to operate the lever as you have an mechanical advantage which permits you to do 4 times the work with the same amount of effort.

7 0
2 years ago
Read 2 more answers
A peregrine falcon is the fastest animal in the world. When it dives, it can accelerate to
svp [43]

The speed of the falcon is 144 km/h

Explanation:

The speed of a body is a scalar quantity telling how fast the object is moving, without giving any information about its direction.

It can be calculated as:

speed = \frac{d}{t}

where

d is the distance covered

t is the time taken

In this problem, the falcon has a speed of

speed = 40 m/s

We want to convert it into km/h. Let's keep in mind that:

1 km = 1000 m

1 h = 3600 s

Therefore, we convert as follows:

speed = 40 \frac{m}{s} \cdot \frac{3600 s/h}{1000 m/k}=144 km/h

Learn more about speed:

brainly.com/question/8893949

#LearnwithBrainly

5 0
3 years ago
At what point on the paraboloid y = x2 z2 is the tangent plane parallel to the plane 3x 2y 5z = 8?
salantis [7]
To find the tangent plane to the surface f(x,y,z)=0 at a point (X,Y,Z) we use the following method: 

<span>Calculate grad f = (f_x, f_y, f_z). The normal vector to the surface at the point (X,Y,Z) is grad f(X,Y,Z). The equation of a plane with normal vector n which passes through the point p is (r-p).n=0, where r=(x,y,z) is the position vector. So the equation of the tangent plane to the surface through the point (X,Y,Z) is ((x,y,z)-(X,Y,Z)).grad f(X,Y,Z)=0. </span>

<span>Now in your case we have f(x,y,z)=y-x^2-z^2, so grad f=(-2x,1,-2z), and the equation of the tangent plane at the point (X,Y,Z) is </span>

<span>((x,y,z)-(X,Y,Z)).(-2X,1,-2Z)=0, </span>

<span>that is </span>

<span>-2X(x-X)+1(y-Y)-2Z(z-Z)=0, </span>

<span>i.e. </span>

<span>-2Xx+y-2Zz = -2X^2+Y-2Z^2. (1) </span>

<span>Now compare this equation with the plane </span>

<span>x + 2y + 3z = 1. (2) </span>

<span>The two planes a_1x+b_1y+c_1z=d_1, a_2x+b_2y+c_2z=d_2 are parallel when (a_1,b_1,c_1) is a multiple of (a_2,b_2,c_2). So the two planes (1),(2) are parallel when (-2X,1,-2Z) is a multiple of (1,2,3), and we have </span>

<span>(-2X,1,-2Z)=1/2(1,2,3) </span>

<span>for X=-1/4 and Z=-3/4. On the paraboloid the corresponding y coordinate is Y=X^2+Z^2=1^4+9^4=5/2. </span>

<span>So the tangent plane to the given paraboloid at the point (-1/4,5/2,-3/4) is parallel to the given plane.</span>
6 0
3 years ago
What type of electromagnetic wave does a cloud fall under?
slava [35]
The answer is a cloud
3 0
3 years ago
Other questions:
  • An ultrasonic ruler, such as the one discussed in Example 4 in Section 16.6, displays the distance between the ruler and an obje
    11·1 answer
  • Describe two examples of Newton's First Law of Motion; the motion of an object does not change if the
    9·1 answer
  • Barton conducts an experiment using three metallic bars that might be magnets. The bars are labeled A, B, and C. The ends of eac
    13·2 answers
  • if a big stone and a small stone is dropped simultaneously from the certain height. they fall together why??​
    8·2 answers
  • The latent heat of fusion of a substance is the amount of energy associated
    15·1 answer
  • Do the moon rotate counterclockwise
    12·1 answer
  • An advertisement for a new fish food claims that lab studies show that fish grew three inches in three weeks while eating the fo
    8·1 answer
  • Please need help with this
    7·1 answer
  • Energy ___________.
    8·2 answers
  • A sound wave travels at 379 m/sec and has a wavelength of 8 meters. Calculate its frequency and period.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!