Michael has a substance that he puts into container 1. the substance has a volume of 5 cubic meters. he then puts the substance in container 2, and it now has a volume of 10 cubic meters. in which phase(s) is the substance

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?