During a reaction, an element loses 4.8 10-28 kg of mass. How ...

[clmills979]

During a reaction, an element loses 4.8  10-28 kg of mass. How much energy (in Joules) is released?
 
  A) 4.3  10-11 J
  B) 1.4  10-19 J
  C) 1.6  10-36 J
  D) 2.1  10-40 J
  E) 5.3  10-45 J

Question 2

A wheel of moment of inertia of 5.00 kg-m2 starts from rest and accelerates under a constant torque of 3.00 N-m for 8.00 s. What is the wheel's rotational kinetic energy at the end of 8.00 s?
 
  A) 57.6 J
  B) 122.0 J
  C) 91.9 J
  D) 64.0 J
  E) 78.8 J

[tdewitt]

Answer to Question 1

A

Answer to Question 2

A