For 25 points please help You need to join three single-phase transformers together to create a three-phase transformer system that can step up the incoming voltage from 240 to 480 VAC. To accomplish
this task, in which of the following arrangements should the three single-phase transformers be connected?
A. Y-delta
B. Delta-Y
C. Y-Y
D. Delta-delta

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

Examine the drawing of a molecule. each ring represents an atom of nitrogen (n). what’s the chemical formula of this substance?

Aforce of 8,480 n is applied to a chart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart?