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.
When to See a Doctor. If your baby is under age 3 months and has a fever, take her to a doctor. For at least the first 6 months of life, call your doctor anytime she has a fever.At your babyâs next checkup you can ask if the doctor has a âfever policy.â That will give you a better idea about when you need to call.ost doctors say a baby has a fever if her temperature rises to 100.4 F or above. Itâs best to take her temperature rectally. Take a few readings when your infant is well to get a sense of what her normal temperature is.