11 Questions
What is the formula to calculate the energy difference of a charged particle in an electric field?
$hf = E_2 - E_1$
What is the formula to calculate the activity of a radioactive sample?
A = λN
What is the relationship between half-life and decay constant?
T_½ = ln2/λ
What is the formula to calculate energy from mass according to the mass-energy equivalence equation?
E = mc^2
What does the symbol Z represent in the chemical symbol of an isotope?
Atomic number
What is the unit of the decay constant λ?
Seconds^-1
What is the relationship between the activity A of a radioactive sample and the number N of undecayed nuclei?
A is directly proportional to N
What is the physical quantity that is related to the frequency f of a charged particle in an electric field?
Energy
What is the unit of the energy E in the formula hf = E2 – E1?
Electronvolts
What is the physical significance of the decay constant λ?
It is the probability of decay per unit time
What is the consequence of the mass-energy equivalence equation E=mc^2?
Mass can be converted to energy and vice versa
Test your knowledge of various physics and chemistry formulas including energy of a charged particle in an electric field, chemical symbols of isotopes, and the laws of radioactive decay. Practice calculating energy levels and radioactive decay activity.
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