One commercial building is supplied with 208/120 volt, 4-wire, three-phase power from another building on the same property and under the same management. The feeder is protected in the first building with a 200 ampere circuit breaker, and the conductors are copper Type THWN run underground in rigid nonmetallic conduit. There are three ungrounded conductors, a neutral conductor, and an equipment grounding conductor. At the second building, the neutral and equipment grounding conductors are required to be:

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

The substances that are necessary for producing of certain hormones and that store and transport vitamins

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".