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
postnew [5]
3 years ago
9

If the frequency of this beam is increased while the intensity is held constant, does the number of electrons ejected per second

from the metal surface increase, decrease, or stay the same?
Physics
1 answer:
Ivan3 years ago
8 0

Answer:

if the intensity of photons is constant then number of ejected electrons will remain same

Explanation:

As per photoelectric effect we know that when light of sufficient frequency fall on the surface of metal then electrons get ejected out of the surface with certain kinetic energy

Here the energy of photons is used to eject out the electrons from metal surface and to give the kinetic energy to the ejected electrons

so we have

h\nu = W + KE

here W = work function of metal which shows the energy required to eject out electrons from metal surface

KE = kinetic energy of ejected electrons

now if we increase the frequency of the photons that incident on the metal surface then in that case the incident energy will increase

So the electrons will eject out with more kinetic energy while if the number of photon is constant or the intensity of photons is constant then number of ejected electrons will remain same

You might be interested in
Why are the nuclei of the heavier elements radioactive and not the lighter elements of nuclei?
KatRina [158]

Answer:

becouse most of nuclear elements are heave

Explanation:

6 0
3 years ago
According to the text, why is the choice not to attend
iogann1982 [59]

Answer:

The answer is B. Without a college education, workers will actually lose money in the long run.

Explanation:

Just got it right on the assignment

7 0
3 years ago
Read 2 more answers
A box is moved 20 m across a smooth floor by a force making a downward angle with the floor, so that there is effectively a 10 N
Usimov [2.4K]

Answer:

100 J

Explanation:

From the question, The work done by the forces in moving the box is given as

W = FxdcosФ+Fydcosα................... Equation 1

Where W = Work done, Fx = force acting parallel to the floor, d = distance moved by the box, Ф = angle the parallel force makes with the floor, Fy = force acting perpendicular to the floor, α = angle the perpendicular force make with the floor.

Give: Fx = 10 N, d = 20 m, Fy = 5 N, Ф = 0°, α = 90°

Substitute into equation 1

W = 10×10×cos0°+5×20×cos90°

W = 10×10×1+0

W = 100 J.

Note: The work done by the perpendicular force is zero

Hence the work done = 100 J

5 0
3 years ago
Which remains the same as the distance of an object from Earth changes?
Gemiola [76]

Answer:

MASS

Explanation:

weight has to do with the gravitational pull, as distance from earth decreases, so does the gravitational pull. meaning, the size of the force, the pull, and the weight would all change. mass stays the same (in this sense. if you gain weight on earth you will gain mass as well, but if you leave earth your weight will lessen and your mass will stay the same.)

hope this helped.

5 0
4 years ago
Read 2 more answers
A ________ is a collection of related data, equivalent to an electronic file cabinet.
dsp73

Answer:

database

Explanation:

4 0
2 years ago
Other questions:
  • Consider 500 g of silver (atomic mass 107 g/mol). Assume that the temperature is high enough that equipartition applies. We heat
    12·1 answer
  • A student who runs every day is becoming bored with her physical fitness routine and considers quitting. What is the most effect
    14·1 answer
  • If the frequency of a wave is tripled, what happens to the period of the wave?
    9·1 answer
  • What is most likely the color of the light whose second-order bright band forms an angle of 13.5° if the diffraction grating has
    10·2 answers
  • Juliette sets the initial velocity to +10 m/s, the acceleration to zero, and clicks “start.” How can Shakina describe the subseq
    11·1 answer
  • A cheetah runs at 93km/he to the east. This describes the cheetah’s
    7·1 answer
  • 3 points
    8·1 answer
  • If a ball is thrown at a wall at 3 m/s (with NO air resistance), with what velocity will it
    15·1 answer
  • Name the substance that combines with water in photosynthesis
    5·1 answer
  • State the meaning of Period and Frequency of an oscillating body?<br>​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!