Which would be harder to move: a kilogram of feathers or a kilogram of bricks? Explain your answer.

The kilogram (kg) is the SI unit for mass. Not weight.

So when you say « heavier » and mention kg, I would assume you’re talking about mass.

The mass of 1 kg of feathers and 1 kg ok bricks are identical.

And if you want an answer to your question comparing the weight on Earth of those 2 items, in vacuum of one kilogram of feathers would have exactly the same weight as one kilogram of bricks.

Explanation:

Hope this helps! <3

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

measure their densities same density, same sub