5. a man walks at 5 km/h in the direction of a 20 km/h wind. if raindrops fall vertically at 7 km/h in still air, determine direction in which the drops appear to fall with respect to the man.

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.

the components of a vector are the parts of the vectors that are to each other.

b perpendicular

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr

gravitational energy

electrical energy

kinetic energy

ligh energy