An alpha particle is accelerated with 5MeV of kinetic energy towards the nucleus of a gold atom with atomic number 79. What is the distance of closest approach that is reached by the alpha particle?
45 femtometers to two significant figures
JM
Related Physics A Level answers
All answers ▸Describe and explain how a constant rate of fission is maintained in a reactor by considering what events or sequence of events may happen to the released neutrons. (6 marks)
2 Capacitors (c1 = 500mf) and (c2=300mf), are connected in parallel to a 10v d.c supply. Calculate the total capacitance of the circuit, and hence the total energy stored in the capacitors.
State Faraday's law of electromagnetic induction
Derive the kinetic theory equation pV=Nm/3(crms2) for an ideal gas.