Atank contains 4,000 l of brine with 14 kg of dissolved salt. pure water enters the tank at a rate of 40 l/min. the solution is kept thoroughly mixed and drains from the tank at the same rate. (a) how much salt is in the tank after t minutes? y = kg (b) how much salt is in the tank after 30 minutes? (round your answer to one decimal place.) y = kg

Aweather forecaster uses doppler radar to predict the track of a storm near the town of meadowlands. when the doppler signal is pointed at the storm from the town's center, the frequencies of the waves appear to be decreasing. what should the weather forecaster predict? a. that the storm will move around the edges of meadowlands without hitting the tosis center o b. that residents should be prepared, because it is impossible to know whether the storm will hit o c. that the storm is moving toward meadowlands and that residents should be prepared d. that the storm is moving away from meadowlands and is not likely to hit the town

How does an insulator stop the flow of an electric current? insulators convert electric energy to other forms of energy

What feature will form as a result of the movement displayed in this illustration? a.convergent boundaryb.mid-ocean ridgec.deep-sea trenchd.transform boundary