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
Hatshy [7]
3 years ago
10

An electron starts from rest in a vacuum, in a region of strong electric field. The electron moves through a potential differenc

e of 36 volts. What is the kinetic energy of the electron in electron volts (eV)
Physics
1 answer:
Semenov [28]3 years ago
7 0

Answer:

The kinetic energy is  KE  = 5.67*10^{-18} \ J

Explanation:

From the question we are told that

    The potential difference is  \Delta V  =  36 \ volts

       

The potential energy of the end  is mathematically represented as

        PEs  =  - q *  \Delta V

q  is the charge on an electron with a constant value of q =  1.60 *10^{-19} \  C

       substituting values

      PE  =  - 1.60*10^{-19} *  36

      PE  =  -  5.67*10^{- 18} \ J

Now from the law of energy conservation

     The PE_e    =  KEe

Where  KE _e is the potential  energy at the end

 So  

        KE  = 5.67*10^{-18} \ J

The  negative sign is not includes because kinetic energy can not be negative

You might be interested in
When you walk across the ground and push on it with your feet...
marissa [1.9K]

Answer:

The ground pushes back on your feet with equal force.

Explanation:

Newton's Laws of Motion

6 0
3 years ago
Read 2 more answers
Two astronauts are floating close to each other in space. Can they talk to each other without using any special device? plsss he
storchak [24]

Answer:

no they can't talk to each other bcoz of the lack of atmosphere.

Explanation:

l hope it helps you

5 0
3 years ago
A plastic rod of length d = 1.5 m lies along the x-axis with its midpoint at the origin. The rod carries a uniform linear charge
Serga [27]

Answer:

Explanation:

Let the plastic rod extends from - L to + L .

consider a small length of dx on the rod on the positive x axis at distance x . charge on it =  λ dx where  λ is linear charge density .

It will create a field at point P on y -axis . Distance of point P

= √ x² + .15²

electric field at P due to small charged length

dE = k λ dx x  / (x² + .15² )

Its component along Y - axis

= dE cosθ where θ is angle between direction of field dE and y axis

= dE x .15 / √ x² + .15²

=  k λ dx  .15 / (x² + .15² )³/²

If we consider the same strip along the x axis at the same position  on negative x axis , same result will be found . It is to be noted that the component of field in perpendicular to y axis will cancel out each other . Now for electric field due to whole rod at point p , we shall have to integrate the above expression from - L to + L

E = ∫  k λ  .15  / (x² + .15² )³/² dx

=  k λ  x L / .15 √( L² / 4 + .15² )

6 0
3 years ago
Insulators have very high .
Vlad1618 [11]

Answer:

Resistance to electrical currents

Explanation:

Conductors have low resistance to electrical currents, and are used to "conduct" the flow of electricity.

Insulators have very high resistance and are used to protect us from the flow of electricity.

5 0
3 years ago
The astronomer who was imprisoned by the church for announcing his scientific discoveries was Brahe Galileo Aristotle Copernicus
tekilochka [14]

Answer:

galileo

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Write a hypothesis about the effect of the magnet polarity on the induced current. Use the "if . . . then . . . because . . ." f
    14·2 answers
  • Where are all stars bornWhat is the brightest star in the night sky? What is its magnitude?
    14·1 answer
  • Which is a example of speed? A)Cindy biked westward at 30km/h B)A Rock is the the left of a flowerpot C) A dog runs an average o
    6·2 answers
  • Suppose that the average speed (vrms) of carbon dioxide molecules (molar mass 44.0 g/mol) in a flame is found to be 2.67 105 m/s
    5·1 answer
  • A banana is fired from a cannon on the ground just as a monkey starts to fall from a tree. The monkey catches the banana in mida
    8·1 answer
  • The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.480 with the floor. If
    12·1 answer
  • Tính lực tương tác giữa 2 điện tích q1=4.10^-6C và q2=-3.10^-6C cách nhau một 3cm đặt trong dầu hoả = 2
    13·1 answer
  • P waves can travel through Earth's outer core, but S waves cannot. Because of this, scientists know
    9·2 answers
  • Which property is unique to electromagnetic waves?(1 point)
    15·2 answers
  • A cubical gaussian surface surrounds a long, straight, charged filament that passes perpendicularly through two opposite faces.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!