Section 1
a girl pushes a box that has a mass of 450 n up an incline. if the girl pushes with a force of 150 n along the incline, what is the
mechanical advantage of the incline?

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

Which type of fossil does this image depict?

What is the percentage of hydrogen in nitrogen trihydride