If a 78.0 kg astronaut were in a spacecraft 6r from the center of the earth, what would the astronaut's weight be on earth, and in the spacecraft?

the answer is to check all of them! they all apply well at least i think so!

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.

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..