Some particles are created via collisions. for instance, pions are created via collisions
with high energy protons and carbon, which releases neutrons and pions (which they
themself, decay into muons).
suppose two particles with momenta of p1 = (3,-1, 0, 0) kg and p2 = (2, 1, 1, 0) kg collide.
three particles are created as a result from this collision, two of which have momenta of
p3 = (1, 1, 0, 0) kg and p4 = (1,-0.5, 0, 0) kg, determine the four momentum, energy, rest
mass and three velocity of the third daughter particle.

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

its a 5.5 n

glad that