Answer:
that one i know only pe not that sorry again
The set of all sets that are not members of themselves. This contradiction is Russell's paradox.
Good morning dear...
Have a beautiful and joyful day ahead.
B) not work ,because the water would freeze
The average velocity of Sandy is given by the total distance covered S divided by the total time taken t:

The total distance covered is

while the total time taken is 2 hours + half an hour (for the rest) + 1 hour and half, so

Therefore, the average velocity is