What is the speed of an electron with kinetic energy (a) 850 eV, and (b) 0.50...

Question

Question

What is the speed of an electron with kinetic energy (a) 850 eV, and (b) 0.50 keV?

science physics

Answer 1

Answer #1

The kinetic energy of the object is,

Here, m is the mass and v is the speed of the object.

(a)

Convert the units of kinetic energy from eV to J.

Rearrange the equation for v

Substitute for and for.

Therefore, the speed of an electron is.

(b)

Convert the kinetic energy from keV to J.

Substitute for and for in.

Therefore, the speed of an electron is.

Answer 2

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