Question

What power, is dissipated in 21.8 μs by 0.59×1015 electrons ejected from a material by 123...

What power, is dissipated in 21.8 μs by 0.59×1015 electrons ejected from a material by 123 nm photons, if they are bound to the material by 4.53 eV?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Given:

Binding Energy = 4.53 eV

Photon Energy is given by

Substituting the known values yields

We can convert this into eV by using the relation

Now, we can calculate the energy of the electron ejected from the metal by the photon using the relation

This is the energy of 1 electron. We can calculate the energy of 0.59x1015 electrons by multiplying by this number.

Total energy of electrons = 3.22 x 1015 eV

Power can be calculated using the relation P = Work done (or energy dissipated) per unit time

Therefore,

To calculate the power in Watts, we will convert eV to J:

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A. What is the energy in 10-3 eV of a photon that has a momentum of...
A. What is the energy in 10-3 eV of a photon that has a momentum of 6.13×10−29 kg ⋅ m/s ? B. What is the energy in 10-9 eV of a photon in a radio wave from an AM station that has a 1,506 kHz broadcast frequency? C. Calculate the frequency in 1020 Hz of a 0.571 MeV γ-ray photon. D. A certain molecule oscillates with a frequency of 1.73×1013 Hz. What is the approximate value of n for a...
Photoelectrons from a material whose work function is 2.29 eV are ejected by 487 nm photons....
Photoelectrons from a material whose work function is 2.29 eV are ejected by 487 nm photons. Once ejected, how long does it take these electrons (in ns) to travel 2.35 cm to a detection device?
In a photoelectric experiment, the work function of the material from which electrons are ejected equals...
In a photoelectric experiment, the work function of the material from which electrons are ejected equals 2.5eV. What is the maximum wavelength of light for which electrons are ejected from this material and what stopping voltage is required when light, having a wave lengthof 3.5x 10-7m, is used with this material(if one may take for Planck’s constant, h = 6.63 x 10−34Js, for the speed of light, c = 3.0 x 108m/s, and noting that:1 eV = 1.6 x 10−19J)?
Light with a frequency of 2.21×10152.21×1015 Hz ejects electrons from the surface of calcium, which has...
Light with a frequency of 2.21×10152.21×1015 Hz ejects electrons from the surface of calcium, which has a work function of 2.87 eV. What is the minimum de Broglie wavelength of the ejected electrons?
What would be the maximum speed of the electrons ejected from a metal plate whose extraction...
What would be the maximum speed of the electrons ejected from a metal plate whose extraction work is 9 eV if it were lit by a light having a wavelength of 100 nm?
What is the maximum kinetic energy in eV of electrons ejected from sodium metal by 2.3...
What is the maximum kinetic energy in eV of electrons ejected from sodium metal by 2.3 x 102-nm EM radiation, given that the binding energy is 2.28 eV? Your answer should be a number with two decimal places, do not include unit.
When a metal was exposed to photons at a frequency of 4.90× 1015 s–1, electrons were...
When a metal was exposed to photons at a frequency of 4.90× 1015 s–1, electrons were emitted with a maximum kinetic energy of 4.00× 10–19 J. Calculate the work function of this metal. 2. What is the maximum number of electrons that could be ejected from this metal by a burst of photons (at some other frequency) with a total energy of 6.89× 10–7 J?​
When a metal was exposed to photons at a frequency of 3.51× 1015 s–1, electrons were...
When a metal was exposed to photons at a frequency of 3.51× 1015 s–1, electrons were emitted with a maximum kinetic energy of 5.60× 10–19 J. Calculate the work function of this metal. what is the maximum number of electrons that could be ejected from this metal by a burst of photons (at some other frequency) with a total energy of 1.78× 10–7 J?
(1) (A) If the power output of a 675 kHz radio station is 53.0 kW, how...
(1) (A) If the power output of a 675 kHz radio station is 53.0 kW, how many photons per second are produced? If the radio waves are broadcast uniformly in all directions, find the number of photons per second per square meter at a distance of 130 km. Assume no reflection from the ground or absorption by the air. (B)Photoelectrons from a material whose work function is 2.39 eV are ejected by 477 nm photons. Once ejected, how long does...
Photons with a frequency of 5.6*10^14 s-1 are required to eject electrons from potassium metal. what...
Photons with a frequency of 5.6*10^14 s-1 are required to eject electrons from potassium metal. what is the kinetic energy of the ejected electrons when 450 nm photons shine on the metal?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT