Which of the following statements about earthquakes is false? a. the building and release of stress along a plate boundary can result in an earthquake. b. earthquakes can occur far from plate boundaries. c. seismic waves originate at a point called the focus. d. no amount of force can cause rock to deform.

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?