Choose the true statement about momentum. a. an object can never actually have zero momentum. b. an object with a large mass always has a large momentum. c. an object with a small mass always has a small momentum. d. momentum can be transferred from one object to another object.

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?