How does the weight of the water displaced compare to the buoyant force?

What do we mean by the event horizon of a black hole?

Did anyone do 1.06 lab: cloud formation i need with it i go to k12 lavcame i need to get it done quick

Suppose that the half-life of an element is 1000 years. how many half-lives will it take before one-eighth of the original sample remains? 8 125 12.5 3