Un dinamometro tiene en su interior un muelle cuya constante es 80 N\m. ¿Que peso se habra colgado de el para producir un alargamiento de 7,5cm? ¿Y si el alargamiento es de 10cm?

The mini-refrigerator fire was most likely caused by what type of wiring?

Along coaxial cable consists of an inner cylindrical conductor with radius a and an outer coaxial cylinder with inner radius b and outer radius c. the outer cylinder is mounted on insulating supports and has no net charge. the inner cylinder has a uniform positive charge per unit length λ.

Awhen a point charge of +q is placed on one corner of a square, an electric field strength of 2 n/c is observed at the center of the square. suppose three identical charges of +q are placed on the remaining three corners of the square. what is the magnitude of the net electric field at the center of the square?