At a certain instant, particles and have position vectors and velocities given by: Matlab/Mathematica input: rP = [5,-4] rQ = [-7,8] vP = [-1,-5] vQ = [3,3] What is the rate of change of the distance between points and ?

How many neutrons does element x have if it’s stormy umber is 33 and it’s mass number is 95?

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.

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up