The pistol shrimp has one big claw that snaps shut with remarkable speed. The part of the claw that rotates moves through a 90° angle in a time interval of 1.5 ms. We assume that the claw is 1.75 cm long and that it undergoes a constant angular acceleration. Required:
a. What is the angular acceleration? Assume the claw starts from rest.
b. What is the final angular speed of the claw?
c. What is the tangential acceleration of the tip of the claw?
d. How fast is the tip of the claw moving at the end of its motion?

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.