University Physics Volume 1 — Mechanics · Problem 14

Units and Measurement — OpenStax

Physics — University · scope-and-scale-of-physics

Problem

Find the order of magnitude of the following physical quantities. (a) The mass of Earth's atmosphere:

5.1 \times 10^{18}

kg; (b) The mass of the Moon's atmosphere: 25,000 kg; (c) The mass of Earth's hydrosphere:

1.4 \times 10^{21}

kg; (d) The mass of Earth:

5.97 \times 10^{24}

kg; (e) The mass of the Moon:

7.34 \times 10^{22}

kg; (f) The Earth–Moon distance (semimajor axis):

3.84 \times 10^{8}

m; (g) The mean Earth–Sun distance:

1.5 \times 10^{11}

m; (h) The equatorial radius of Earth:

6.38 \times 10^{6}

m; (i) The mass of an electron:

9.11 \times 10^{-31}

kg; (j) The mass of a proton:

1.67 \times 10^{-27}

kg; (k) The mass of the Sun:

1.99 \times 10^{30}

kg.