Physics, 05.03.2020 22:35, nanakwameyeb
In a location in outer space far from all other objects, a nucleus whose mass is 3.969554 × 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 3.902996 × 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.
Answers: 3
Physics, 22.06.2019 04:30, xdimplesjoon
Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.
Answers: 1
Physics, 22.06.2019 06:30, vaelriacb9300
Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.
Answers: 2
Physics, 22.06.2019 11:00, flores1717
Positrons are spontaneously emitted from the nuclei of
Answers: 1
In a location in outer space far from all other objects, a nucleus whose mass is 3.969554 × 10−25 kg...
Mathematics, 24.04.2021 02:30
Mathematics, 24.04.2021 02:30
Mathematics, 24.04.2021 02:30
English, 24.04.2021 02:30