During which stage of technological design are prototypes built

Determine the mass of fuel required for the expected energy consumption in the united states for the next ten years. energy use per person per year in the united states = 3.5 x 1011joules base calculations on current population of 310,000,000.

Describe the interaction that occurs between two objects with the same electrical charge.

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa