Part one
a square plate is produced by welding together four smaller square plates, each of side
a. the weight of each of the four plates is
shown in the figure.
find the x-coordinate of the center of gravity (as a multiple of a).
answer in units of a.
(pictured)

part two
find the y-coordinate of the center of gravity
(as a multiple of a).
answer in units of a

Can you think of a way a rock unit with an older fossil could be above a rock until with a younger fossil? describe the scenario.

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

If anyonee has done the momentum lab practical in physics can you give me the answers i am s lostt rnn : (