rcmango
Jan22-08, 09:44 PM
1. The problem statement, all variables and given/known data
Point A is at a potential of +240 V, and point B is at a potential of -120 V. An -particle is a helium nucleus that contains two protons and two neutrons;
the neutrons are electrically neutral. An -particle starts from rest at A and accelerates toward B.
When the -particle arrives at B, what kinetic energy (in electron volts) does it have?
in eV
2. Relevant equations
3. The attempt at a solution
W = q * (chng in V)
q is the charge stored by a dialectric capacitor.
and change in V is the electric potential difference.
chng in V = Vb - Va = -360 V correct?
so where does the q come from?
Point A is at a potential of +240 V, and point B is at a potential of -120 V. An -particle is a helium nucleus that contains two protons and two neutrons;
the neutrons are electrically neutral. An -particle starts from rest at A and accelerates toward B.
When the -particle arrives at B, what kinetic energy (in electron volts) does it have?
in eV
2. Relevant equations
3. The attempt at a solution
W = q * (chng in V)
q is the charge stored by a dialectric capacitor.
and change in V is the electric potential difference.
chng in V = Vb - Va = -360 V correct?
so where does the q come from?