1.A hole at the bottom of a fish tank releases water at a rate given by the free jet equation. The hole at the bottom has a .5" diameter. If the water level is desired to be at 2' high and be at steady state, what is the rate of water to be added to the tank?
2.An available Direct Current (DC) power supply provides 11 volts to a circuit. The available relay for switching a secondary circuit requires 4 volts and has a coil resistance of 145 ohms. If a voltage divider circuit is used to reduce the voltage to activate the relay, what resistor is needed to create the necessary coil voltage? ... they need the resistance