1. What is a. a star;
b. a planet;
C. a moon;
d. an asteroid;
E. an artificial satellite?

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.

It is really hard for me right know

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?