What is the dogs average acceleration from 0 to 12 seconds

Apositive point charge q is fixed on a very large horizontal frictionless tabletop. a second positive point charge q is released from rest near the stationary charge and is free to move. which statement best describes the motion of q after it is released? assume q stays on the table

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?