Question

7) Calculate the de Broglie wavelength of a neutron that has a velocity of 200.cm/s. (mass of a neutron = 1.675 x 10-27 kg and h = 6.63 x 10-34 J.) A) 1.98 x 10-9 m B) 216 nm my E=hu 6 1.8 x 1050 m = 1.98x107 D 198 nm E) 5.05 mm . E= 1.98x1E) -= 2.685x cour 6.630 16 34 3.36410-27 6.637 10 34 Cadu

Answer 1

7. Calculate de the the the the de-broglie wavelength of a neutron de-brogle that has a velocity 06 doocm/s [mass of a neutron: 1.675 X10kg and h=6.63 x 10-34 Jis ] 1. convoit Cms to m/s 200 cm/s = 2.00m/s e kinetic energy of the pret neutron % Calculate the kinetic energy of the prot KE: Ya (myja - 40 C 1.675x10-27 kg) C2.00 m/s) = 3.35 x 10 975 a 15 kg. m 2 ordine ! 3. Use the de-Broglie equation = h/p = n/a Em = 6.626 X 10 34 JIS n o 38.8 V(a) 3.35x10-27 9 * 11675 x 10-24 kg 9 . = 1.9999 10m NOPI PEERDED convert in to nm 1.9779 x 10 m = 198 nm so, the answer is D=198 nom.