Does a human touch make a motherbird reject its baby? | Don't Memorise #Shorts

Two Carnot engines A and B are operated in series. The engine A receives heat from the source at temperature T_1 and rejects the heat to the sink at temperature T. The second engine B receives the heat at temperature T and rejects to its sink at temperature T_(2) . For what value of T the efficiencies of the two engines are equal?

Why was the young seagull afraid to fly? Do you think all young birds are afraid to make their first flight, or are some birds more timid than others? Do you think a human baby also finds it a challenge to take its first steps?

You re holding a cage contasining a bird. Do you hasve to make less effort if the bird flies from its positon in the cage and manages to stay in the middle without touching the walls of he cage? Does it make a dciference whether the cage is completely closed or it has rods to let air pass?