Physics Decay Problem?

tarikyameen · #1 (**permalink**) 02-26-2008, 05:58 PM

A neutron at rest decays (breaks up) to a proton and an electron. Energy is released in the decay and appears as kinetic energy of the proton and electron. The mass of a proton is 1836 times the mass of an electron.
What fraction of the total energy released goes into the kinetic energy of the proton?

K(p)/K(tot)=____%

adamh · #2 (**permalink**) 02-26-2008, 05:58 PM

momentum is conserved so p=mv
the kinetic energy is determined by the velocity
so take
1/1836=5.44x10^-2 %

yes its right i already entered it

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Finding Decay Events?	ChemLeanrer	News & Events	0	03-23-2008 11:00 PM
Do asthma medicines contribute to tooth decay in toddlers?	marcooo	Medicine	0	03-06-2008 04:26 PM
Do asthma medicines contribute to tooth decay?	marcooo	Medicine	0	03-06-2008 10:53 AM
decay in chemistry?	blazn15648	Chemistry	0	03-02-2008 11:27 PM
chemistry decay (made it myself) its hard!!?	blazn15648	Chemistry	0	03-02-2008 07:16 PM