Suppose 5.15 moles of an ideal monatomic gas expands reversibly and adiabatically from an initial volume of v1=20.0l and initial temperature of t1=473k until it reaches a final temperature of t2=303k . calculate the final; volume v2 and give your answer in si units.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.