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Discipline: Physics

Question topic: Astronomy: Phases of the Moon

Source: Originais Teachy

Level of difficulty: Medium

(Originais Teachy 2023) - Question Medium of Physics

Suppose you are a farmer in a small community and need to determine the right time to start planting your crops, taking into account the phases of the moon. Observing the sky, you see that today the moon is in the waxing phase, with approximately half of its surface illuminated. Considering this scenario, answer the following: (a) How many days will it take for the full moon to occur after the current waxing phase? (b) Describe the intermediate phases that the moon goes through before reaching the full moon. (c) Based on this information, explain how the phases of the moon could be useful to you as a farmer in determining the timing of planting.


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Astronomy: Phases of the Moon
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During a field trip to the local planetarium, students learn about the various phases of the moon. They learn that the moon revolves around the Earth approximately every 27.3 days (the sidereal period), and the Earth-Moon distance is about 385,000 kilometers. The moon's orbit around the Earth is not a perfect circle but an ellipse. Assuming the moon moves at a constant speed in its orbit, calculate how many kilometers the moon travels in one complete orbit around the Earth. Remember to use the formula for the circumference of a circle, C = 2πr, where r is the radius of the circle. Note: Use the value of π as 3.14.
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Explain in detail how the phases of the moon occur, including the different positions of the Earth, Moon, and Sun, and how sunlight acts on the surface of the Moon. In addition, discuss the importance of the phases of the Moon for different human activities throughout history.
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The Second Law of Newton states that the acceleration of an object is directly proportional to the applied resultant force and inversely proportional to its mass. In this sense, if two objects have the same applied forces but with different masses, which of the following statements will be true?
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