Why is it that you might feel the effect of gravitational forces between you and the Earth, but not between you and a classmate? BRAINLIST WILL BE REWARDED

Which of the following electromagnetic waves can create ions?

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5

Suppose that a certain fortunate person has a net worth of $71.0 billion ($7.10×1010). if her stock has a good year and gains $3.20 billion (3.20×109) in value, what is her new net worth?