Refer to the table of densities to answer the following questions: substance density (g/ml) aluminum titanium zinc tin iron nickel copper silver lead mercu 9 10 100 2.70 4.54 7.13 7.31 7.87 8.90 8.96 10.50 11.35 13.55 19.30 50 10 5 volume (em) 5. sketch a graph of mass vs. volume for titanium, copper and mercury.

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?