Roughly how many different chemical compounds are there? A) 20 ...

[jlmhmf]

Roughly how many different chemical compounds are there?
 
  A) 20
  B) 100
  C) 4
  D) 500
  E) many more than 500

Question 2

A proton beam that carries a total current of 1.3 mA has 10.0 mm diameter. The current density in the proton beam increases linearly with distance from the center.
 
  This is expressed mathematically as J(r) = J0 (r/R), where R is the radius of the beam and J0 is the current density at the edge. Determine the value of J0. A) 25 A/m2
  B) 6.2 A/m2
  C) 12 A/m2
  D) 17 A/m2

[lin77x]

Answer to Question 1

E

Answer to Question 2

A

[jlmhmf]

TYSM

[cam1229]

Excellent