An artifact is found in a desert cave. the anthropologists who found this artifact would like to know its age. they find that the present activity of the artifact is 15 decays/s and that the mass of carbon in the artifact is 0.100 kg. what is the age of the artifact? be mindful of the units. remember that the fraction of radioactive carbon isotopes in a naturally-occuring sample of carbon is about 1.3×10−12. the question: what is the age of the artifact in years?

(age of artifact = # years)

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s