There are many different types of scientific investigations. which of the following types is most likely to use a control group? a. observational field study b. model-building c. laboratory experiment d. all of these

5points ! is potential chemical energy always transformed into kinetic

A5 nc point charge is at the origin and a second 3 nc point charge is on the x-axis at x = 0.8 m. find the magnitude and direction of the electric field on the x-axs at x = 0.2 m. you may express the direction by letting positive field mean the positive x direction

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant