when U238 nucleus originally at rest decays by emitting an alpha particle having a speed u, the recoil speed of residual nucleus is
1. 4u/238
2. -4u/234
3. 4u/234
4. -4u/238
Remember Cedric. Remember, if the time should come when you have to make a choice between what is right and what is easy, remember what happened to a boy who was good, and kind, and brave, because he strayed across the path of Lord Voldemort. Remember Cedric Diggory.
Albus Dumbledore
Goblet of Fire, Chapter 37, Page 724
bt i was wondering how cum this question is from chemistry!!
Remember Cedric. Remember, if the time should come when you have to make a choice between what is right and what is easy, remember what happened to a boy who was good, and kind, and brave, because he strayed across the path of Lord Voldemort. Remember Cedric Diggory.
Albus Dumbledore
Goblet of Fire, Chapter 37, Page 724
Moderation Team
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