How fast must a plane fly along the earth's equator so that the sun stands still relative to the passengers? give your answer in both km/h and mph. the radius of the earth is 6400 km.
part a km/h
part b mph
part c in which direction must the plane fly, east to west or west to east?
express your answer using two significant figures.

17×10² km/h

10×10² mph

east to west

Explanation:

Circumference of Earth

Speed = Distance / Time

Converting to mph

The velocity of the plane must be 17×10² km/h or 10×10² mph

The plane must fly east to west

answer: the correct answer is   air pressure at the top of mount everest is higher than at the bottom of the grand canyon.

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explanation:

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2