1. earth is approximately a sphere of radius 6.37х106 m. what are (a) its circumference in kilometers, (b) its surface are in square kilometers, and (c) its volume in cubic kilometers?

As we know that circumference of the sphere is given as

here we know that

now we have

PART B)

surface area of the sphere is given as

PART C)

Volume of the sphere is given as

here we have

Explanation:

Given that,

Radius of Earth,

(a) It is not possible to find the circumference of the sphere. But if we consider an image of the Earth, its circumference is given by :

(b) Surface area of a sphere is given by :

(c) Volume of the sphere is given by :

Hence, this is the required solution.

speed

ratio of distance traveled to time interval

net force

vector sum of forces on object

object

source of diverging light rays either luminous or illuminated

don't remove my answer im trying my best to answer them

explanation:

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.