At what condition does a body become weightless at equator

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

part 1: which substance has a higher solubility?

a

smallest amount left undissolved atall temps in table shown most has dissolved high sol'by

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.