Count the "F's"

riVeRrat This is not necessarily the case since our understanding of simple rules allows for errors to creep in as well.How often can we expect to see the Earth rise and set from the surface of the moon?

0

It depends on where you are. Zero for most of the front half; zero for most of the back half. However some number if you are on the limb in the right place. I don't know the motions but I'd guess once a month.

riVeRratCorrect.The moon and earth are tidally locked. Now let us try something else. Does the center of the earth follow the curve of the parabolic orbital motion of the earth? Why or why not?

I don't know why you are asking me these questions, they have nothing to do with logic, just knowledge.I am an amateur astronomer.I own a Meade 8" reflector on an equatorial mount. It is old, and does not have the go to software, I have to polar align it manually. I use an olympus OM-1 for taking the pictures.To me a test on logic is more answering a question when given the necessary tools to figure it out. This does not exclude using logic to figure out the question you asked.I believe the answer to your question is no. The reason why is we are on a tilt, and that affects the orbit of the moon. So we are in a constant tug of war between sun, earth and moon. The tilt rotates once every 27,000 years, called reccesion.I am not 100% on this answer as I haven't done any astronomy in about 8 years. I have to dig up my pictures of hale-bopp, and hyatake, and post them. I have to scan them first.

riVeRrat You really believe that? First you correctly answered the question of whether the earth rises and sets on the moon. Yet you cannot proceed from there to the next question? Alright. Then let us follow this shall we?What does it mean for the earth to not move in the sky on the moon? What is the motion responsible for this effect to occur? Please think about what must be occuring between the Earth and moon to account for this. But here you have no directions except the ability to think out the consequences of your knowledge. Logic applies when you realize the actual motions involved in the first question are the answer to the second one. Think on it and let me know what happens as you try to figure it out ok? Nope. The tilt is not pertainent to the orbit of the moon.To simplify it just take the Earth moon system itself and their interaction.

That's my whole point. If you read the question wrong, then you will not get the answer right. But that doesn't mean your not logical.Think of a logic circut in electronics. If you feed it the wrong numbers, is it not logical when the wrong answer comes out?