A 0.8 kg hockey puck is moving at 40 m/s hits a straw bale, stopping in 0.9 s what is the magnitude of the impulse was imparted to the hockey puck? the unit has to be in kg m/s

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow

What describes the particles in a liquid

Acircular ring of charge with radius b has total charge q uniformly distributed around it. what is the magnitude of the electric field at the center of the ring? 0 keq/b2 keq2/b2 keq2/b none of these answers