Blocks A and B have a mass of 15 kg and 25 kg, respectively. If B slides on the surface for which µk = 0.4 has a velocity of 15 m/s when S=7m from A. If the unstretched spring has a stiffness k = 1200 N/m, determine the maximum compression of the spring due to the collision. Take e = 0.80.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

An external consultant recommends that a plant installs a bank of capacitors for power factor correction. this will reduce the peak electrical demand charges by an average of 93 kw every month. the plant current pays $13 per kw in peak demand charges. the capacitor bank will include 223 kw of fixed capacitors, and 183 of variable capacitors. the fixed capacitors cost $59 per kw, and the variable capacitors will cost $65 per kw. the consultant charges 21% of the equipment costs to install the capacitors. because this project will reduce the demand for the electric utility, they are prepared to provide a one-time rebate of $42 per kw of reduced demand. what is the simple payback period for this project (in years)?

How to convert a friction to decimal ?