If all the stars in the universe were the same distance from earth, we would see how each star’s brightness compares with all the other stars. this is a star's

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below. your friend goes first, and you follow after he has dropped a distance of 2.0m. when your friend hits the water, is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.

Positive ions differ from neutral atoms in that

Make a drawing of the electric field lines around a positive charge, then make a second drawing of the electric field lines around a negative charge.