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The Moon lies 384,000 km from the Earth, and the Sun lies 150,000,000 km away. If both have the same angular size, how many times larger than the Moon is the Sun? We're really stumped on this one. Again, we don't need the answer, just how to go about solving it. Sorry if this isn't allowed. )...

Given that the distance to the Moon is 384,000 km, and taking the Moon's orbit around the Earth to be circular, estimate the speed (in kilometers per second) at which the moon orbits the earth. MIND YOU, I am not asking you to give me the answer! Please explain to me how I should go about...