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Mass and Density of the Earth Multiple Questions and Answers.
| 1. | If the density of the planet is doubled without any change in its radius, how does g change on the planet? | ||
| A. | It remains the same | ||
| B. | It is tripled | ||
| C. | It reduces | ||
| D. | It is doubled | ||
| 2. | A man waves his arm while walking. This is? | ||
| A. | To keep constant velocity | ||
| B. | To ease the tension | ||
| C. | To increase the velocity | ||
| D. | To balance the effect of earth’s gravity | ||
| 3. | Kepler’s second law is based on? | ||
| A. | Newton’s first law | ||
| B. | Newton’s second law | ||
| C. | Special theory of relativity | ||
| D. | Conservation of angular momentum | ||
| 5. | If earth loses its gravity, then for a body? | ||
| A. | A weight becomes zero, but not the mass | ||
| B. | Mass becomes zero but not weight | ||
| C. | Neither mass nor weight becomes zero | ||
| D. | Both mass and weight are zero | ||
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