1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# Astronomy The table shows the mass of the planets, the sum and the moon in our solar system.Celestial BodyMass (kg)Mass (kg)Standard NotationSun 1,990,000,000,000,000,000,000,000,000,0001.99×1030Mercury330,000,000,000,000,000,000,000Venus4,870,000,000,000,000,000,000,000Earth5,970,000,000,000,000,000,000,000Mars642,000,000,000,000,000,000,000,000,000Jupiter1,900,000,000,000,000,000,000,000,000Saturn568,000,000,000,000,000,000,000,000Uranus86,800,000,000,000,000,000,000,000Neptune102,000,000,000,000,000,000,000,000Pluto12,700,000,000,000,000,000,000Moon73,500,000,000,000,000,000,000Which planet has about the same mass as earth?

Open in App
Solution

## In standard form of a number we put decimal after first digit and remaining power is written as power of 10So,Using law of exponents am×an=am+nSun =199×1028=1.99×1028×102=1.99×1030Mercury =33×1022=3.3×1022×10=3.3×1023Venus =487×1022=4.87×1022×102=4.87×1024Earth =597×1022=5.97×1022×102=5.97×1024Mars =642×1027=6.42×1027×102=6.42×1029Jupiter =19×1026=1.9×1026×10=1.9×1027 Saturn =568×1024=5.68×1024×102=5.68×1026Uranus =868×1023=8.68×1023×102=8.68×1025Neptune =102×1024=1.02×1024×102=1.02×1026Pluto =127×1024=1.27×1020×102=1.27×1022Moon =795×1020=7.95×1020×102=7.95×1022So, by comparing masses in standard form,we get, order of mass of Venus and Earth are same i.e 1024.So, it has very similar mass as earth

Suggest Corrections
1
Join BYJU'S Learning Program
Related Videos