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| Q. |
The mass, in kg, of the earth if its radius is 6400 km, will be |
| A. | 6 x 1024 |
| B. | 6 x 1025 |
| C. | 107 dynes |
| D. | 6 x 1023 |
| E. | 6 x 1022 |
| Answer» A. 6 x 1024 | |
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