A 1959 penny has a diameter of 19.55 mm, a thickness of 1.55 mm, ...

[stevenposner]

A 1959 penny has a diameter of 19.55 mm, a thickness of 1.55 mm, and a mass of 2.500 g. What is its density?
 
  A) 5.37  103 kg/m3
  B) 21.5  103 kg/m3
  C) 1.34  103 kg/m3
  D) 2.68  103 kg/m3
  E) 1.86  10-4 kg/m3

Question 2

A beam of X-rays at a certain wavelength are scattered from a free electron at rest and the scattered beam is observed at 45.0 to the incident beam. What is the Compton shift?
 
  A) 1.75  10-13 m
  B) 2.76  10-13 m
  C) 0 m
  D) 3.56  10-13 m
  E) 7.11  10-13 m

[DylanD1323]

Answer to Question 1

A

Answer to Question 2

E

[stevenposner]

Excellent

[raili21]

Great answer, keep it coming