A crystal diffracted a beam of electrons. The crystal spacing was ...

[mcmcdaniel]

A crystal diffracted a beam of electrons. The crystal spacing was 0.18 nm and the maximum scattering occurred at 80. relative to the surface normal. The electrons were directed normally onto the crystal.
 
  (a) What is the wavelength of the electrons? (b) What potential difference accelerated the electrons?

Question 2

The mass of a typical adult woman is closest to
 
  A) 20 kg.
  B) 35 kg.
  C) 75 kg.
  D) 150 kg.

[pallen55]

Answer to Question 1

(a) 0.18 nm
(b) 48. V

Answer to Question 2

C

[mcmcdaniel]

Thank you!

[pallen55]

Always glad to help...