A positive slope on a position-time graph suggests O a. acceleration
O b. decceleration
c. Both A & B
O d. zero movement

Arigid tank contains 10 kg of air at 137 kpa (abs) and 21°c. more air is added to the tank until the pressure and temperature rise to 242 kpa (abs) and 32°c, respectively. determine the amount of air added to the tank. [r-0.287 kj/kg k]