Chapter 6: Homework 1 Question 10 of 10 < > -/10 Current Attempt in Progress In a location in outer space far from all other objects, a nucleus whose mass is 3.620124 10-25 kg and that is initially at rest undergoes spontaneous alpha decay. The original nucleus disappears, and two new particles appear: a He-4 nucleus of mass 6.640678 10-27 kg (an alpha particle consisting of two protons and two neutrons) and a new nucleus of mass 3.553550 10-25 kg. These new particles move far away from each other, because they repel each other electrically (both are positively charged). Because the calculations involve the small difference of (comparatively) large numbers, you need to keep seven significant figures in your calculations, and you need to use the more accurate value for the speed of light, 2.9979246e8 m/s. Choose all particles as the system. Initial state: Original nucleus, at rest. Final state: Alpha particle + new nucleus, far from each other. Part 1 (a) What is the rest energy of the original nucleus? (Round your answer to seven significant figures.) i Save for Later Part 2 Attempts: 0 of 4 used Submit Answer (b) What is the sum of the rest energies of the alpha particle and the new nucleus? (Round your answer to seven significant figures.) i Save for Later Part 3 J Attempts: 0 of 4 used Submit Answer (c) Did the portion of the total energy of the system contributed by rest energy increase or decrease? decrease The total rest energy is unchanged. increase Save for Later SUPPORT Attempts: 0 of 4 used Submit Answer