A boy slides a book across the floor using a force of five and over a distance of 2M what is the kinetic energy of the book afte
1 answer:
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Answer:
3.5434 eV
Explanation:
For a particle with kinetic energy E and mass m , the wavelength associated is given by the following relation,
E =
Putting the values we get
E =
=1.063 x 10⁻²¹ J
= .0066 eV.
Energy of¹light in terms of eV
= 1244 / 350 = 3.55 eV.
Work function = 3.55 - 0.0066 = 3.5434 eV.