What are three inventions used to increase friction?


Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

Three resistors are connected in series across a 15-v power supply. if the potential drops across resistors 1 and 2 are 4.1 volts and 3.1 volts, what is the exact potential drop (in volts) across resistor 3?

When flexing to a reflective style, one should be specific, brief and to the point, and maintain a fast and decisive pace?