Question

what is the wavelength of the electron if it has kinetic energy 4.55×10^-18J​

Answer 1

Answer:

Explanation:

wavelength= 2.302 angstrom

Explanation:

since

K= p²/2m

here K is kinetic energy

p is momentum

m is mass of the given item

therefore

p=√(2Km)

p=√(2×4.55×10^-18×9.1×10^-31)

p= 2.88×10^-24 kgms^-1

since wavelength (w)= h/p

w= 6.63×10^-34/2.88×10^-24

w= 2.302×10^-10 m

or

w= 2.302 angstrom

I hope it helps!!!!!