What substances existed as solid flakes within the innermost regions (within about the inner 0.3 AU) of the solar system before planets began to form

none

Explanation: No substance exist as solid flakes within the innermost regions of the solar system before planets began to form. But substances that were found within the inner 0.3 AU of the solar system before planets began to form includes;rocks, metals, hydrogen compounds, hydrogen, and helium, all in gaseous form.

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards