Describe at least two changes that occurred to the atomic model over time, along with the experimental evidence that made these changes necessary.

Determine the maximum r-value of the polar equation r =3+3 cos 0

Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt