7. (15 points) A cylindrical tank contains 0.5 m3 of gas at temperature 20 C and pressure 2 atm. The tank has a tight-fitting piston that allows the volume to be changed. What will be the pressure if the volume of the gas in the tank increased to 1.5 m3 and the temperature of the gas increased to 150.C. Bonus, optional: (15 points) 8. When doing a pull-up, a student lifts her 60.0-kg body a distance of 0.25 meters in 2 seconds. What is the power delivered by the student's biceps