The 9-inch-long elephant nose fish in the Congo River generates a weak electric field around its body using an organ in its tail. When small prey (or even potential mates) swim within a few feet of the fish, they perturb the electric field. The change in the field is picked up by electric sensor cells in the skin of the elephant nose. These remarkable fish can detect changes in the electric field as small as 3.0 μN/C. (a) How much charge (modeled as a point charge) in the fish would be needed to produce such a change in the electric field at a distance of 75 cm? (b) How many electrons would be required to create the charge?

Gideon company uses the allowance method of accounting for uncollectible accounts. on may 3, the gideon company wrote off the $2,200 uncollectible account of its customer, a. hopkins. on july 10, gideon received a check for the full amount of $2,200 from hopkins. the entry or entries gideon makes to record the write off of the account on may 3 is:

Aborrower takes out a 30-year adjustable rate mortgage loan for $200,000 with monthly payments. the first two years of the loan have a "teaser" rate of 4%, after that, the rate can reset with a 5% annual payment cap. on the reset date, the composite rate is 6%. what would the year 3 monthly payment be?

M. cotteleer electronics supplies microcomputer circuitry to a company that incorporates microprocessors into refrigerators and other home appliances. one of the components has an annual demand of 235 units, and this is constant throughout the year. carrying cost is estimated to be $1.25 per unit per year, and the ordering (setup) cost is $21 per order. a) to minimize cost, how many units should be ordered each time an order is placed? b) how many orders per year are needed with the optimal policy? c) what is the average inventory if costs are minimized? d) suppose that the ordering cost is not $21, and cotteleer has been ordering 125 units each time an order is placed. for this order policy (of q = 125) to be optimal, determine what the ordering cost would have to be.