When it is 2 PM Mountain Standard Time (MST) on February 3 in North Platte, NE(L = 101◦ W, φ = 41.1◦ N), what is the solar time? b When it is 2 PM MST in Boise, ID(L = 116◦ W, φ = 43.6◦ N), on February 3, what is the solar time? c What Eastern Daylight Time corresponds to solar noon on July 31 for Portland, ME(L = 70.5◦ W, φ = 43.7◦ N)? d What Central Daylight Time corresponds to 10:00 AM on July 31 for Iron Mountain, MI(L = 90◦ W, φ = 45.8◦ N)?

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)?