A particular type of fundamental particle decays by transforming into an electron e- and a positron e+. Suppose the decaying particle is at rest in a uniform magnetic field of magnitude 3.95 mT and the e- and e+ move away from the decay point in paths lying in a plane perpendicular to . How long after decay do the e- and e+ collide? Assume an electron and a positron are non-relativistic.

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.