Why electrons carry a net energy but not a net a current in case of thermal conduction

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

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

70 give a real life example showing how sensory neurons work with the motor neurons