Double stranded DNA molecule negatively charged with a charge density of -e per nanometer
1. what is the electric field due a DNA molecule at a distance of 10 nm?
2. have 2 DNA molecules each 3 (mew)m length separated by a distance of 10 (mew)m what is the magnitude of the force between the 2 molecules? is attractive or repulsive?
3. is it valid to use the result for an line of charges?