Witch one is moving away from us the slowest.

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

the answer to this is proletariats.

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electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.