star a is 4 light ears away from earth. star b is 10 light years away from earth. when you observe both stars from earth they appear to have the same brightness. how do the stars apparent magnitudes compare?

Why should seat belts not be mandatory quick plz

Where do magnetic lines of force enter earth?

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.