Answer:
A, B, D.
Explanation:
If Jamy pushes on Anita, then by Newton's 3rd Law there will be a reaction force equal in magnitude and opposite in direction. This means that A and D are correct, while C, E, F and G are incorrect. Since the magnitude of any of these forces can be calculated with Newton's 2nd Law, F=ma for either Jamy or Anita, this means that B is correct.
John dalton proposed that all elements and matter is composed of atoms.
This isn't a specific answer, but explaining this. Noble gases don't bond easily with other elements because they have their outermost orbital filled, and do not need an extra or need to let go of one to become complete. Therefore, they don't share or give away/take electrons easily.
You could say something like, "I know I'm hard to bond with, it's just I don't like to share," or something like that.
Period of an ideal simple pendulum = 2π √(L / G)
1.87 = 2π √ (L / 9.81)
Divide each side by 2π : (1.87 / 2π) = √ (L / 9.81)
Square each side: (1.87 / 2π)² = L / 9.81
Multiply each side by 9.81 : L = (9.81) (1.87 / 2π)² = <em> 0.869 meter</em>
Choice 'D' is the closest one.
It would take the boat just over four and one half hours to travel 32 miles upstream.