The four plausible routes by which terrorists might use nuclear ...

[piesebel]

The four plausible routes by which terrorists might use nuclear devices do not include
 
  A) acquiring radioactive material and using conventional explosive to disperse this material.
  B) sabotaging a nuclear power plant.
  C) enriching natural uranium to weapons grade uranium, and building a nuclear weapon from it.
  D) obtaining weapons-grade uranium or plutonium and building a nuclear weapon from it.
  E) seizing an intact nuclear weapon.

Question 2

Jennifer hits a stationary 0.20-kg ball, and it leaves her racket at 40 m/s. Time-lapse photography shows that the ball was in contact with the racket for 40 ms.
 
  (a) What average force did the ball exert on the racket? (b) What is the ratio of this force to the gravitational force that Earth exerts on the ball?

[owenfalvey]

Answer to Question 1

C

Answer to Question 2

(a) 0.20 kN (b) 100

[piesebel]

Both answers were spot on, thank you once again

[owenfalvey]

Great! Please up vote