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**18. Review Conceptual Example 2 before attempting to work this problem. The moon has a diameter of 3.48 × 10° m and is a distance of 3.85 x 10* m from the earth. The sun has a diameter of 1.39 × 10° m and is 1.50 x 10'" m from the earth. (a) Determine (in radians) the angles subtended by the moon and the sun, as measured by a person standing on the earth. (b) Based on your answers to part (a), decide whether a total eclipse of the sun is really “total." Give your reasoning. (c) Determine the ratio, expressed as a percentage, of the apparent circular area of the moon to the apparent circular area of the sun.

**18. Review Conceptual Example 2 before attempting to work this problem. The moon has a diameter of 3.48 × 10° m and is a distance of 3.85 x 10* m from the earth. The sun has a diameter of 1.39 × 10° m and is 1.50 x 10'" m from the earth. (a) Determine (in radians) the angles subtended by the moon and the sun, as measured by a person standing on the earth. (b) Based on your answers to part (a), decide whether a total eclipse of the sun is really “total." Give your reasoning. (c) Determine the ratio, expressed as a percentage, of the apparent circular area of the moon to the apparent circular area of the sun.

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**18. Review Conceptual Example 2 before attempting to work this problem. The moon has a diameter of 3.48 × 10° m and is a distance of 3.85 x 10* m from the earth. The sun has a diameter of 1.39 × 10° m and is 1.50 x 10'" m from the earth. (a) Determine (in radians) the angles subtended by the moon and the sun, as measured by a person standing on the earth. (b) Based on your answers to part (a), decide whether a total eclipse of the sun is really “total." Give your reasoning. (c) Determine the ratio, expressed as a percentage, of the apparent circular area of the moon to the apparent circular area of the sun.
Transcribed Image Text:**18. Review Conceptual Example 2 before attempting to work this problem. The moon has a diameter of 3.48 × 10° m and is a distance of 3.85 x 10* m from the earth. The sun has a diameter of 1.39 × 10° m and is 1.50 x 10'" m from the earth. (a) Determine (in radians) the angles subtended by the moon and the sun, as measured by a person standing on the earth. (b) Based on your answers to part (a), decide whether a total eclipse of the sun is really “total." Give your reasoning. (c) Determine the ratio, expressed as a percentage, of the apparent circular area of the moon to the apparent circular area of the sun.
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