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.
Most doctors â and the American Academy of Pediatrics (AAP) â agree that a normal body temperature for a healthy baby is between 97 and 100.3 degrees Fahrenheit. If your baby's rectal temperature is 100.4 degrees or higher, he has a fever. How to take your newborn's temperature.