Two protons, each of charge 1.60 10-19 C, are 3.00 10-5 m ...

[Shelles]

Two protons, each of charge 1.60  10-19 C, are 3.00  10-5 m apart. What is the change in potential energy if they are brought 1.00  10-5 m closer together? (ke = 8.99  109 Nm2/C2)
 a. 3.84  10-24 J
  c. 1.15  10-23 J
  b. 3.20  10-16 J
  d. 3.20  10-19 J

Question 2

A 20-g bullet moving at 1000 m/s is fired through a one-kg block of wood emerging at a speed of 200 m/s. What is the change in the kinetic energy of the bullet-block system as a result of the collision assuming the block is free to move?
 a. 0 J
  c. 9.5 kJ
  b. -9.5 kJ
  d. -18 J

[kalskdjl1212]

Answer to Question 1

A

Answer to Question 2

B

[Shelles]

Thanks for the timely response, appreciate it

[nothere]

Great answer, keep it coming