Apositive charge of 94.0 nc is 12.0 cm from a negative charge of 53.0 nc. the force on one of the charges due to the other is approximately

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?