HARD
Diploma
IMPORTANT
Earn 100
Deviations from Rutherford scattering are expected when the alpha particles reach large energies. Suggest an explanation for this observation.
Important Questions on Quantum and Nuclear Physics (HL)
HARD
Diploma
IMPORTANT
Show that the nuclear density is the same for all nuclei. (Take the masses of the proton and neutron to be the same.)
MEDIUM
Diploma
IMPORTANT
State the evidance in support of nuclear energy levels.
MEDIUM
Diploma
IMPORTANT
Radium's first excited nuclear level is 0.0678MeV above the ground state. Write down the reaction that takes place when radium decays from the first excited state to the ground state.
MEDIUM
Diploma
IMPORTANT
Radium's first excited nuclear level is above the ground state.The wavelength of the photon emitted is . Find the value of x.
MEDIUM
Diploma
IMPORTANT
Find the decay constant for krypton-92, whose half-life is 3.00s.
HARD
Diploma
IMPORTANT
Suppose that you start with 1/100 mole of krypton. Estimate how many undecayed atoms of krypton there are after 1s,2s, and 3s. Decay constant is 0.231 1/s.
HARD
Diploma
IMPORTANT
Estimate the activity of 1.0g of radium-226 . The half-life of radium-226 is 1600yr.
MEDIUM
Diploma
IMPORTANT
The half-life of an unstable element is 12 days. Find the activity of a given sample of this element after 20 days, given that the initial activity was 3.5MBq.
