If two objects are moving in opposite directions, I know that you choose one direction to be negative and one to be positive, and then find the sum of momentum. What I'm not sure about is kinetic energy. To find the total kinetic energy of the objects moving in opposite directions, would one of the...

Two helo props going in opposite directions.

A box contains n white balls and m blue balls. Balls are drawn at random and with replacement until a blue ball is drawn. What is the probability that (a) exactly n draws are required (b) At least n draws are required.

I have three outdoor Minka Aire ceiling fans controlled by the same switch. The switch is specifically for these fans and it controls both the light and the blades. The directional button is also on the switch (not on the fans themselves). Two of the fans rotate the same direction; however, the...

I have two Hampton Bay Windward III ceiling fans which need to be operating in the same direction of rotation. I have one remote control that operates both fans and only one switch that kills power to both fans.The remote control can reverse direction of both fans. For some unknown reason the fans...