A balanced wye-connected three-phase source has line-ta-neutral voltages of 440 V rms. Find the rms line-ta-line voltage nlagnitude. If this source is applied to a wye-connected load composed of three 30-!1 resistances~ find the rms line-current magnitude and the total power delivered

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?