At a particular moment, a rectangular box has dimensions a: = 12, b = 16, and c = 20 inches, and the dimensions a, b are increasing at 2 in./sec while C is decreasing at 4 in./sec. 3.) Find the rate at which the volume of the box is changing at the instant in question. b) Find the rate at which the surface area of the box is changing. (Dedicated to all you Physics Fans!) The voltage, V, (in volts) across a circuit is given by Ohm's law: V = I R , where I is the current (in amps) owing through the circuit and R is the resistance (in av E 0.01 as the battery wears out. How fast is the current I changing at the moment when R = 4-50 ohms and I = 0.09 amps if if = 0.03? ohms). Consider the situation where the voltage in a simple circuit is slowing down at a rate of