The larger these peaks and valleys are, the harder it is to slide the object. You can learn more about friction in How Brakes Work. A clutch works because of friction between a clutch plate and a flywheel. We'll look at how these parts work together in the next section.
You should take children older than 3 months to the emergency room (ER) for a fever if the fever is more than 104 degrees for a long period of time. Ice them down first and then bring them to the ER.
If your baby is under three months, take him to the doctor at the first sign of illness. For a baby over three months, you may want to take him to the doctor to confirm that it is a common cold. Also take your baby to the doctor if: Breastfeeding is one of the best ways to protect your baby's health.