Bài 2: hai điện tích điểm như nhau đặt trong chân không cách nhau một đoạn 4cm, lực đẩy tĩnh điện giữa chúng là 10-5N a. Tìm độ lớn mỗi điện tích
b. Tìm khoảng cách giữa chúng để lực đẩy tĩnh điện là 2,5.10-6N

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.

well clustered together.

points close on a scatter diagram

its lower due to the doppler effect.: apex