The voltage, , (in volts) across a circuit is given by Ohm's law: , where is the current (in amps) flowing through the circuit and is the resistance (in ohms). If we place two circuits, with resistance and , in parallel, then their combined resistance, , is given by . Suppose the current is amps and increasing at amp/sec and is ohms and increasing at ohm/sec, while is ohms and decreasing at ohm/sec. Calculate the rate at which the voltage is changing. Round your answer to three decimal places.

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

The fine detail of saturn's rings provides evidence that the planet may be: a. young b. millions of years old c. in a state of growing larger

In the middle of the night you are standing a horizontal distance of 14.0 m from the high fence that surrounds the estate of your rich uncle. the top of the fence is 5.00 m above the ground. you have taped an important message to a rock that you want to throw over the fence. the ground is level, and the width of the fence is small enough to be ignored. you throw the rock from a height of 1.60 m above the ground and at an angle of 54.0 degrees above the horizontal. part a part complete what minimum initial speed must the rock have as it leaves your hand to clear the top of the fence? express your answer with the appropriate units. part b for the initial velocity calculated in the previous part, what horizontal distance beyond the fence will the rock land on the ground?