Brielle rubbed a plastic ruler on her hair. Her friend Maurice rubbed a beach ball on his shirt before placing it on a table. What will happen as Brielle slowly moves the ruler closer to the beach ball?

Which of the following quantities are units of momentum? (there could be more than one correct choice.) a)n m b) kg s/m c) kg m/'s d)n-s 12 points] e) kg m2/s2

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.

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f