Since i = 2% is the monthly rate, we multiply 2% x 12, the number of monthly periods in a year in order to determine the annual rate. In this case, Aaron needs to find an interest rate of 24% per year compounded monthly in order to reach his future value goal of $634 in one year.
Enamel is the thin outer covering of the tooth. This tough shell is the hardest tissue in the human body. Enamel covers the crown which is the part of the tooth that's visible outside of the gums. Because enamel is translucent, you can see light through it.But the main portion of the tooth, the dentin, is the part that's responsible for your tooth color -- whether white, off white, grey, or yellowish.lthough enamel is a hard protector of teeth, it can chip and crack. Enamel also insulates the teeth from potentially painful temperatures and chemicals. Unlike a broken bone that can be repaired by the body, once a tooth chips or breaks, the damage is done forever.
A jar of apple cider vinegar next to a leaf and apples Photo Credit Zoonar/Heike Rau/Zoonar/Getty Images. Enamel is the hard protective coating on the outside of your teeth.According to the website for the University of California San Francisco, tooth decay or injury can cause breaks in enamel, but it rarely cracks all the way through, unlike man-made substitutes, such as ceramic.Apple cider vinegar can be bad for tooth enamel, although it also has minerals that can make teeth healthier.ccording to the website for the University of California San Francisco, tooth decay or injury can cause breaks in enamel, but it rarely cracks all the way through, unlike man-made substitutes, such as ceramic. Apple cider vinegar can be bad for tooth enamel, although it also has minerals that can make teeth healthier.