Five planets orbit identical stars. The planet names, mass, and semi-major axis are as follows: Abydos: 0.5 Earth-mass planet with semi-major axis 20 AU Pern: 1 Earth-mass planet with semi-major axis 1 AU Arrakis: 45 Earth-mass planet with semi-major axis 0.3 AU Magrathea: 10 Earth-mass planet with semi-major axis 1 AU Trantor: 1 Earth-mass planet with semi-major axis 11 AU Using Kepler's third law, decide which answer lists the planets based on their orbital periods from longest to shortest.

In a hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. how many unique charge-pairs are there (without double counting)?

7. see worksheet 1 for values of variables x1, x2 and x3 and answer the following questions: a. for each variable find the mean, median, coefficient of skewness, range and population standard deviation. b. compared to variable x1, how are the mean and median affected by extreme values (outliers) seen in x2 and x3. c. is the median or mean the better measure of location for x2 and x3? explain. d. explain the differences in the magnitudes of the skewness coefficients for the three variables. e. what is the relationship between the range and standard deviation looking across the three variables?

The bubbles in a carbonated soft drink are produced when carbonic acid decomposes to form carbon dioxide and water. in a closed system, this equilibrium exists as why does a carbonated soft drink lose carbonation when the container is left open? a.water evaporates, which favors the formation of h2co3. b.pressure decreases, which favors the formation of h2co3. c.the open container warms up, which causes more gas to escape. d.co2is removed, which favors the formation of h2co3.