Select the correct answer. Which chemical reaction absorbs energy? A. photosynthesis B. explosion C. current produced by a batte
2 answers:
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Answer:
Explanation:
<u>Given:</u>
= initial velocity of the electron =
= final velocity of the electron =
= initial position of the electron from the proton = very distant =
<u>Assume:</u>
= mass of an electron =
= magnitude of charge on an electron =
= magnitude of charge on an proton =
= Boltzmann constant =
= final position of the electron from the proton
= change in kinetic energy of the electron
= work done by the electrostatic force
= electrostatic force
= instantaneous distance of the electron from the proton
Let us first calculate the work done by the electrostatic force.
Using the principle of the work-energy theorem,
As only the electrostatic force is assumed to act between the two charges, the kinetic energy change of the electron will be equal to the work done by the electrostatic force on the electron due to proton.
Hence, the electron is at a distance of when the electron instantaneously has speed of three times the initial speed.