A Red Rider bb gun uses the energy in a compressed spring to provide the kinetic energy for propelling a small pellet of mass 0.27 grams. By cocking the lever attached to the stock of the rifle, the spring (k = 1900 N/m) is compressed 9.5 cm from its equilibrium point. 1. What is the potential energy energy stored in the compressed spring?
2. What is the kinetic energy of the pellet when the spring is released?
3. What is the muzzle velocity of the bb?
4. If the rifle was modified so that the spring could be compressed twice as far, 19 cm, what would be the resultant muzzle velocity of the bb?

4. now look at the green lines you created by connecting the three boiling point data points and the three melting point data points. for each of these lines, describe any trends you see. 5. locate the elements on your periodic table that you circled in green on your graph. what term or description would you use to identify these elements with respect to the periodic table? 7. using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers.