Certain neutron stars (extremely dense stars) are believed to be rotating at about 0.70 rev/s. If such a star has a radius of 19 km, what must be its minimum mass so that material on its surface remains in place during the rapid rotation

Identify the arrows that show the correct direction of heat transfer. 66°f 112°f 98°f

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

Often called simply "velocity," this is the velocity of an object at a particular moment in time.