A certain volume of dry gas at NTP is allowed to expand five times of its original volume at adiabatic condition. Find temperature and pressure

What are the phases shown in a and d called?

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600