« previous next »
Pages: [1]   Go Down

Author Topic: Physics Paper 1 question  (Read 923 times)

Offline persian17

  • Newbie
  • *
  • Posts: 16
  • Reputation: 0
Physics Paper 1 question
« on: June 08, 2009, 10:15:23 am »
Anyone know why the answer is B not D? isnt beta just an electron?
Logged

Offline astarmathsandphysics

  • SF Overlord
  • *********
  • Posts: 11271
  • Reputation: 65534
  • Gender: Male
  • Free the exam papers!
Re: Physics Paper 1 question
« Reply #1 on: June 08, 2009, 10:18:43 am »
Yes a beta particle is an electron. An electron is emmited
n>p++e-so the proton number goes up by one. The mass of proton and neutron are the same so the mass doesnt change. it is B
Logged

Offline IGSTUDENT

  • SF Citizen
  • ***
  • Posts: 192
  • Reputation: 811
Re: Physics Paper 1 question
« Reply #2 on: June 08, 2009, 10:19:29 am »
When Beta particle is emitted 1 neutron is split into 1 proton and one electron. Electron escapes and hence 1 proton is added and 1 neutron lost.
Logged

Offline IGSTUDENT

  • SF Citizen
  • ***
  • Posts: 192
  • Reputation: 811
Re: Physics Paper 1 question
« Reply #3 on: June 08, 2009, 10:20:30 am »
Quote from: astarmathsandphysics on June 08, 2009, 10:18:43 am
Yes a beta particle is an electron. An electron is emmited
n>p++e-so the proton number goes up by one. The mass of proton and neutron are the same so the mass doesnt change. it is B
Excellent explanation
Logged

Offline Fouad93

  • Newbie
  • *
  • Posts: 20
  • Reputation: 17
Re: Physics Paper 1 question
« Reply #4 on: June 08, 2009, 10:29:37 am »
which year is that question
Logged
Pages: [1]   Go Up
« previous next »