What is Baby universe ?

(Hope this helps can I pls have brainlist (crown)☺️)

Explanation:

world of babies A wormhole connects one portion of space–time to another region of space time. It has been proposed that when a big item in the Universe collides into a black hole, it may pass through the singularity at the black hole's centre, spawning an expanding baby universe in a different area of space time. Inflation may quickly expand the size of such a newborn universe. It's possible that the Universe we live in began in this manner. Despite the fact that the concept of infant universes is very speculative and requires a definite quantum gravity theory, it has been studied by a number of theorists. Also see multiverse.

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.