Good Riddles

Question: In Africa, a baby was born - Are the baby's teeth black or white?

Question: Which city is the dangerous city in the world?

Question: I move faster in certain solids, but slower in certain gases. I am typically broken by objects with large masses. I can be used as for pleasure, practice, and even an alarm. If used excessively, I can cause harm. What am I?

Question: What is the only place you leave without entering it?

Question: A man lives in a small village in a poor country. There's no jobs in the village. To find work you must travel 2 hours by animal to the nearest city. One day when the man was going home he got stopped by a traveler. The traveler said there's a shortcut the man could take as long as his name has no more than 10 letters, has no more than 3 vowels, and has no letters repeat more than once. If the man's name is Solomon can he take the shortcut?