Which object would have magnetic domains like those shown in the image?

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

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

In a good thermo flask the main cause of heat loss is