Tectonic plates are large segments of the earth's crust that move slowly. suppose one such plate has an average speed of 6.0 cm per year. (a) what distance does it move in 25 seconds at this speed? what's the formula for this problem?

For this problem, we use the following expression:

Speed = distance / time

Since the problem tells us the speed of the plates, we know that

Speed_plates = 6.0 cm/year

Which is equal to

Speed_plates = 6.0 cm/365 days = 6.0 cm/(365*24 hours)

Speed_plates = 6.0 cm/(365*24*60 minutes)

Speed_plates = 6.0 cm/(365*24*60*60 seconds)

Speed_plates = 190.258 E -9 cm / s

We multiply by 25, to get the distance traveled after 25 seconds

Distance traveled = 4.756 E-6 cm

the total distance traveled by the car is

30km + 49km = 79 km .

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.