Answer:
a)-True
Explanation:
When the direction of a process is reversed through infinitesimal changes to the system. The infinitesimal changes are done by the surroundings. After the process has been reversed the system and surroundings go back to their original state.
The changes take an infinite amount of time so, it is not possible practically.
Answer:
Explanation:
Given
scale i.e. 
Using Reynolds number similarity


Properties of air

Properties of sea water




