Athin plastic rod of length 2.5 m is rubbed all over with wool, and acquires a charge of 75 nc, distributed uniformly over its surface. calculate the magnitude of the electric field due to the rod at a location 7 cm from the midpoint of the rod. do the calculation two ways, first using the exact formula for a rod of any length, and second using the approximate formula for a long rod.

i think the answer is a, hope this is right, that would be my best guess.

measure their densities same density, same sub

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."