Los centros de dos pequeñas esferas metálicas con carga de 7.4×10−8 C están a 10 cm uno de otro. a) ¿Cuál es la fuerza eléctrica entre ellas? b) Una de las esferas se toca con otra idéntica neutra, ¿cuál es ahora la fuerza eléctrica si se mantienen a la misma distancia? La constante en la expresión de la ley de Coulomb es k=9.0×109 Nm2C2.

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average