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
Bumek [7]
3 years ago
14

In the photoelectric effect, a photon with an energy of 5.3 × 10–19 J strikes an electron in a metal. Of this energy, 3.6 × 10–1

9 J is the minimum energy required for the electron to escape from the metal. The remaining energy appears as kinetic energy of the photoelectron. What is the velocity of the photoelectron, assuming it was initially at rest?
Physics
1 answer:
valentina_108 [34]3 years ago
4 0

Answer:

The velocity of the photo electron is 6.11\times 10^5\ m/s.

Explanation:

Given that,

Supplied energy, E_s=5.3\times 10^{-19}\ J

Minimum energy of the electron to escape from the metal, E_e=3.6\times 10^{-19}\ J

We need to find the velocity of the photo electron. The energy supplied by the photon is equal to the sum of minimum escape energy and the kinetic energy of the escaping electron. So,

5.3\times 10^{-19}\ J=3.6\times 10^{-19}\ J+K\\\\K=5.3\times 10^{-19}-3.6\times 10^{-19}\\\\K=1.7\times 10^{-19}\ J

The formula of kinetic energy is given by :

K=\dfrac{1}{2}mv^2\\\\v=\sqrt{\dfrac{2K}{m}} \\\\v=\sqrt{\dfrac{2\times 1.7\times 10^{-19}}{9.1\times 10^{-31}}} \\\\v=6.11\times 10^5\ m/s

So, the velocity of the photo electron is 6.11\times 10^5\ m/s.

You might be interested in
____ waves are often used in heat lamps fill in the blank
Ludmilka [50]
Heat your answer is Heat.

Hoped I helped.
8 0
3 years ago
Read 2 more answers
Carol can be defined as a social drinker because she can easily limit drinking and she chiefly drinks alcohol when she is out wi
satela [25.4K]
True. These are the characteristics of a social drinker.
6 0
3 years ago
Read 2 more answers
In which scenario is an animal doing work? Check all that apply.
AleksAgata [21]

Answer:

I think the letter B is a good idea for me to do the same as oneroure oneroure I I was just wondering if you could give me a a little more about what you are looking for in a career in the area of the main crop between the rows of the main crop between the rows of the main crop between the between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop main crop between the between the rows of rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between the rows of the main crop between a single one or more and then you have the right one for your hair that fits your hair and you are not the one to choose from the given choice of the following proof choose your own style or the color of your a color scheme that is used in used color and colors and colors of your company name what you want and how you can easily find the perfect fit in a wide range of colors the colors colors you choose want for the following elements to make sure your style is style fits into your design or and how your design is design in your style style design and color style design and color style design design and style design for your wedding photography studio design and photography studio design studio photography gallery featuring a wide web design gallery and photo design gallery design and design gallery and photo design and design studio photography studio design and photography studio photography photography photography photography photography gallery photography photography photography studio wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding photography wedding wedding photography

6 0
2 years ago
In which situation is the object experiencing unbalanced forces? A) A box resting on a horizontal floor. B) A car slowing as it
evablogger [386]

"Unbalanced forces" show themselves as a change in the speed
or direction of an object's motion.

The only choice where the speed or direction of motion is changing
is the car that's slowing down for the light.

3 0
3 years ago
Read 2 more answers
What energy comes from swinging a bat
hjlf

Answer:

Kinetic Energy

Explanation:

The potential energy is being converted into kinetic energy. The hitter has struck the ball transferring the kinetic energy from the swinging bat to the ball.

8 0
3 years ago
Other questions:
  • When viewed from Earth, Mars appears to change colors. This most likely happens because
    7·1 answer
  • How does the electrical force relate to the charge of an object?
    11·2 answers
  • delivery ladies is Shivam noted at the thundering sound of 6 second after the lightning was seen by him​
    10·2 answers
  • When the sun heats up the surface of a puddle of water
    10·1 answer
  • Earth's _____ cycle moves water from one reservoir to another. This cycling of materials is one of Earth's dynamic processes.
    5·2 answers
  • A uniform electric field is pointing in x direction. The magnitude of the electric field is 10 N/C. The filed makes an angle of
    8·1 answer
  • Which of the following would demonstrate an attraction between magnetic poles?
    10·2 answers
  • Gaussian surfaces A and B enclose the same positive charge+Q. The area of Gaussian surface A is three times larger than that of
    10·1 answer
  • Jen is conducting an experiment involving a device known as a pith-ball electroscope, shown below.
    7·2 answers
  • HELP PLS MARKING BRANLIST 100 Pts TAKING TEST RN
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!