What conclusion can be drawn from both sources about the size and weight difference between earth and mars?

The reaction q+r2=r2q is found to be first order in r2 and

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

What are transitions between a liquid and a solid called? identify which way they are transitioning