bolted

this might seem like a dumb question, but the emblems on my mazda3 are painted black by the previous owner, and i wanted to purchase new chrome finished ones to replace them..would it be possible to remove the current black emblems and replace them or are they bolted down? and by emblems, i mean...

i heard a paper clip works but it doesnt i tried what will other than the proper tool

My friend needs the cat on his '98 accord replaced, but he's getting a ridiculous quote from the mechanic. i though that maybe one reason it's so high is because it's welded on, but i think a '98 civic's cat is bolted on, but not sure. the car isn't around for me to check myself. can somebody...

...without adjustment? This is a question I need help with in astronomy in the chapter about gravity, orbits, kepler's laws, etc.