Galileo’s pendulum theory stated that the time taken to swing through one complete cycle of a pendulum depends on what? A. The mass tied to it B. The amplitude of the swing C. The length of the string D. The velocity of the pendulum E. The volume of the mass tied.

Consider two closed systems a and b. system a contains 3000 kj of thermal energy at 20°c, whereas system b contains 200 kj of thermal energy at 50°c. now the systems are brought into contact with each other. determine the direction of any heat transfer between the two systems.