An electron is accelerated from rest through a potential difference of 500 V. It then enters a uniform magnetic field of 0.54 T that points out of the page and is perpendicular to the direction of motion of the electron. Assume the electron is moving in the -x direction. Required:
a. What is the magnetic force (magnitude and direction) that acts on the electron?
b. What is the radius of the path the electron follows in the magnetic field?
c. Would the radius of the electron's path be smaller or larger if the charge of the electron were smaller?

f is prop to m1xm2 double m1 double force

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.