The answer is: Absolute brightness is the actual amount of light produced by the star, whereas apparent brightness changes with distance from the observer. Hope this helps, and have a great day
A. The friction between two pieces of sandpaper is greater than
the friction between any of the pairs of surfaces.
D. Juan should decrease the mass of his go-kart. Then any force
that pushes it forward will give it greater forward acceleration.
Explanation:
Below is an attachment containing the solution.