In pair creation, an electron-positron pair is created from A) ...

[acc299]

In pair creation, an electron-positron pair is created from
 
  A) a photon. B) a neutron. C) a neutrino. D) a rabbit. E) nothing.

Question 2

A man in a gym is holding an 8.0-kg object at arm's length, a distance of 0.55 m from his shoulder joint. What is the torque about his shoulder joint due to the object if his arm is held at 30 below the horizontal?
 
  A) 22 N  m
  B) 2.2 N  m
  C) 4.4 N  m
  D) 13 N  m
  E) 37 N  m

[cam1229]

Answer to Question 1

A

Answer to Question 2

E

[acc299]

Thanks for the timely response, appreciate it

[duy1981999]

Gracias!