Aboy pulls a wagon full of newspapers down the sidewalk at a constant acceleration. suddenly, half the newspapers fall off the wagon. if the boy continues to pull with the same force as before, what happens? a. the net force remains constant. b. the wagon suddenly speeds up. c. the mass that he is pulling does not change.

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?