if photons of light with a wavelength of 189.1 nm illuminate the surface of a metal, what will the kinetic energy of the electron be, in j? (note: this question depends on your answer to part 1. your final answer to this question must be submitted after you've submitted your final answer to part 1)

Question

23-11-2022
Chemistry

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if photons of light with a wavelength of 189.1 nm illuminate the surface of a metal, what will the kinetic energy of the electron be, in j? (note: this question depends on your answer to part 1. your final answer to this question must be submitted after you've submitted your final answer to part 1)

Answer :

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kjuli1766 kjuli1766 · Answer 1 · 2022-11-29T09:16:12-05:00

The kinetic energy of the electron be, in j is 4.1766 × 10⁴⁹.

Kinetic energy is the power an object has because of its motion. If we want to boost up an object, then we must follow a force. making use of force requires us to do paintings. After work has been accomplished, energy has been transferred to the object, and the object might be moving with a new consistent speed.

Calculation:-

wavelength = 189.1 nm

= 189.1 × 10⁻⁹ m

c = λf

f = 189.1 × 10⁻⁹ m / 3 × 10⁸

= 63.033 × ⁻ ¹⁷

kinetic energy = hf

= 6.626 × 10⁻³⁴ × 63.033 × ⁻ ¹⁷

= 417.66 × 10⁻⁵¹

= 4.1766 × 10⁴⁹

The kinetic energy of an item is the electricity that it possesses because of its motion. it is defined because the work needed to boost up a frame of a given mass from relaxation to its stated pace. Having gained this energy for the duration of its acceleration, the frame maintains this kinetic electricity except for its pace changes.

Potential energy saved energy that relies upon the relative position of numerous components of a gadget. A spring has greater potential energy when it is compressed or stretched. A steel ball has extra capability strength raised above the ground than it has after falling to Earth.

Learn more about kinetic energy here:-https://brainly.com/question/25959744

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