How did the change happen from first man to the last man as shown in the picture?

Who is the Man in the above picture?

How are the various articles and materials shown in the picture measured?

A system changes from the state ( P_1,V_1 ) to ( P_2,V_2 ) as shown in the figure, what is the work done by the system?

Respiration requires O2. How did the first cells on the earth manage to survive in an atmosphere that lacked O2?

To charge an object by induction. : Rub a comb or a balloon on your hair. As shown in the picture 8.4 on page 54 of your textbook, take the comb near a thin trickle of water from a tap what happes. Now draw the comb away from the trcikle and observe what happens. : Mark your observation with a tick. : When the charged comb is brought close to the flowing water, water gets attracted/repelled/remains as it was. : when the charged comb is taken away from the flowing water, it gets attracted.repelled/remains as it was initially.

In how many ways 6 men and 3 women can be seated round a table so that every man has womwn by his side?