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प्रश्न
The table shows the mass of the planets, the sun and the moon in our solar system.
| Celestial Body |
Mass (kg) | Mass (kg) Standard Notation |
| Sun | 1,990,000,000,000,000,000,000,000,000,000 | 1.99 × 1030 |
| Mercury | 330,000,000,000,000,000,000,000 | |
| Venus | 4,870,000,000,000,000,000,000,000 | |
| Earth | 5,970,000,000,000,000,000,000,000 | |
| Mars | 642,000,000,000,000,000,000,000,000,000 | |
| Jupiter | 1,900,000,000,000,000,000,000,000,000 | |
| Saturn | 568,000,000,000,000,000,000,000,000 | |
| Uranus | 86,800,000,000,000,000,000,000,000 | |
| Neptune | 102,000,000,000,000,000,000,000,000 | |
| Pluto | 12,700,000,000,000,000,000,000 | |
| Moon | 73,500,000,000,000,000,000,000 |
- Write the mass of each planet and the Moon in scientific notation.
- Order the planets and the moon by mass, from least to greatest.
- Which planet has about the same mass as earth?
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उत्तर
a. Mass of each planet and Moon in scientific notation is given below:
Using law of exponents,
am × an = am + n
Sun = 199 × 1028
= 1.99 × 1028 × 102
= 1.99 × 1030
Mercury = 33 × 1022
= 3.3 × 1022 × 10
= 3.3 × 1023
Venus = 487 × 1022
= 4.87 × 1022 × 102
= 4.87 × 1024
Earth = 597 × 1022
= 5.97 × 1022 × 102
= 5.97 × 1024
Mars = 642 × 1027
= 6.42 × 1027 × 102
= 6.42 × 1029
Jupiter = 19 × 1026
= 1.9 × 1026 × 10
= 1.9 × 1027
Saturn = 568 × 1024
= 5.68 × 1024 × 102
= 5.68 × 1026
Uranus = 868 × 1023
= 8.68 × 1023 × 102
= 8.68 × 1025
Neptune = 102 × 1024
= 1.02 × 1024 × 102
= 1.02 × 1026
Pluto = 127 × 1020
= 1.27 × 1020 × 102
= 1.27 × 1022
Moon = 795 × 1020
= 7.95 × 1020 × 102
= 7.95 × 1022
b. Order of mass of all planets and Moon from least to greatest
Pluto < Moon < Mercury < Venus < Earth < Uranus < Neptune < Saturn < Jupiter < Mars
c. Venus has about the same mass as Earth.
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संबंधित प्रश्न
Mass of earth is 5.97 × 1024 kg and the mass of the moon is 7.35 × 1022 kg. What is the total mass?
The table shows the average distance from each planet in our solar system to the sun.
| Planet | Distance from Sun (km) |
Distance from Sun (km) Standard Notation |
| Earth | 149,600,000 | 1.496 × 108 |
| Jupiter | 778,300,000 | |
| Mars | 227,900,000 | |
| Mercury | 57,900,000 | |
| Neptune | 4,497,000,000 | |
| Pluto | 5,900,000,000 | |
| Saturn | 1,427,000,000 | |
| Uranus | 2,870,000,000 | |
| Venus | 108,200,000 |
- Complete the table by expressing the distance from each planet to the Sun in scientific notation.
- Order the planets from closest to the sun to farthest from the sun.
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Ajay had a 1 cm piece of gum. He put it through repeater machine given below and it came out `1/(100,000)` cm long. What is the missing value?
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The left column of the chart lists the lengths of input pieces of ribbon. Stretching machines are listed across the top. The other entries are the outputs for sending the input ribbon from that row through the machine from that column. Copy and complete the chart.
| Input Length | Machine | |||
| × 2 | ||||
| 1 | 5 | |||
| 3 | 15 | |||
| 14 | 7 | |||
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