A 0.15kg hockey puck is being pushed along frictionless ice by a stick. Its speed changes from 0.2 m/s to 2.54 m/s in 2.1 seconds. What is the acceleration of the puck in this time? What force does the stick exert on the puck?

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

(1 point) match the differential equations and their vector valued function solutions. you may wish to multiply at least one solution out fully, to make sure that you know how to do it. you can get the other answers quickly by process of elimination and just multiply out one row element.

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.