Nguyên tử A có tổng số hạt là 28, trong đó hạt không mang điện chiếm sắp xỉ 35%. a) Hãy tính hạt mỗi loại và cho biết A là nguyên tố nào?
b) Vẽ sơ đồ cấu tạo của nguyên tử A

the increase of protons   hope this

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

ok whats the question if not i cannot you i need question and need a thing to answer