When solving the complicated problem of the yo-yo, how did Professor Geller approach the problem to make it easier? a. He neglected the linear portion of motion-it doesn't matter
b. He split up the motion of the yo-yo into linear and rotational parts
c. He tried to solve rotational and linear motion in the same equation
d. He neglected the rotational portion of motion--it doesn't matter

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?