What does the “s” indicate in a 2s atomic orbital?

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

What best discribes the relationship between wavelength and frequency in a electromagnetic wave

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?