Definition of Negative and Zero Exponents.
\begin{align*}
a^{-n} \amp = \frac{1}{a^n} \amp\amp (a \ne 0) \\
a^0 \amp = 1 \amp\amp (a \ne 0)
\end{align*}
Planet | Radius (km) | Mass (\(10^{20}\) kg) | Density (kg/m\(^3\)) |
Mercury | 2440 | 3302 | |
Venus | 6052 | 48,690 | |
Earth | 6378 | 59,740 | |
Mars | 3397 | 6419 | |
Jupiter | 71,490 | 18,990,000 | |
Saturn | 60,270 | 5,685,000 | |
Uranus | 25,560 | 866,200 | |
Neptune | 24,765 | 1,028,000 | |
Pluto | 1150 | 150 |
Planet | Density |
Mercury | 5426 |
Venus | 5244 |
Earth | 5497 |
Mars | 3909 |
Jupiter | 1241 |
Saturn | 620 |
Uranus | 1238 |
Neptune | 1615 |
Pluto | 2355 |