Smalls Electric Company is considering investing in new powe…

Smalls Electric Company is considering investing in new power-switching equipment.  The net present worth and probabilities for three probable outcomes are : Outcome: A B C Net PW 5.3K 4.5K 8.6K Probability of outcome 0.50 0.30 0.20   What is the risk, σPW, associated with the proposal?

As shown in the figure, a bullet of mass 0.010 kg moving hor…

As shown in the figure, a bullet of mass 0.010 kg moving horizontally suddenly strikes a block of wood of mass 1.5 kg that is suspended as a pendulum. The bullet lodges in the wood, and together they swing upward a vertical distance of 0.40 m. The length of the string is 2.0 m. What was the speed of the bullet just before it struck the wooden block?