Answer: 0.5N
Explanation: if the system is at equilibrium, sum of the torque will be equal to zero.
But if they are not in equilibrium.
U will find the difference in the two torque
find the attached file for solution
Answer:
w= p∆v 50000 ( 0.55-0.40) and calculate and you get it
Positively charged protons in the nucleus of the gold atom .... rutherford scattering ???