Magnetostatic fields have no divergence anywhere in space, but have a set of points with non-zero curl. What does this imply about the behavior of field lines for a magnetostatic field

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i just did this and got a 100.

this is poiselle's equation from fluid mechanic in physics. mech eng

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles