Which of the following represents the most efficient green energy source in Arizona, where it rains less than thirty days a year?

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

While preforming an experiment involving a reaction between two chemicals the scientist observes that the reaction container has become warm the observation is an example of