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 child has a fever, it is best to call your pediatrician first before heading to the emergency room (ER). However, if your pediatrician is unavailable, and your child (age 3 or older) has had a temperature over 102 degrees for two or more days, you should seek emergency care. You should also head to the ER if the fever is accompanied by any of these symptoms: abdominal pain. difficulty breathing or swallowing.