The half-life of a certain element is 100 days. how many half-lives will it be before only one-eighth of this element remains?
2
3
8
12.5

Which statement describes absolute and apparent brightness? absolute brightness and apparent brightness are identical ways to describe the brightness of a star. absolute brightness and apparent brightness change with the distance from the star to the observer. absolute brightness depends on the distance from the star to the observer, whereas apparent brightness is always the same. absolute brightness is the actual amount of light produced by the star, whereas apparent brightness changes with distance from the observer.

Which of the following tools can be used to determine humidity? select all that apply. barometer: hygrometers: anemometer: hair: thermometer

Imagine a 28-year-old man named keith is about to be released from prison after serving a seven year sentence. keith is not sure where to start when he gets out. the lease on his apartment and his job are both long gone. he has no immediate family to get him a hand, he will be completely on his own. what types of things do you think he might need with once he is released?