In the adjacent figure, the four particles form a square of edge length a= 5.00 cm and have charges q1 = -10nC , q2 = +20nC , q3 = -20nC , q4 = +10 nC. In unit-vector notation, what net electric field do the particles produce at the square's center?

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?