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 none of these types of child fevers fit your current situation, then you probably donât need to call your doctor. 1  If your infant is 6 weeks or younger, and has a fever of 101 degrees or higher, this is considered a medical emergency. Your doctor should evaluate your infant right away, either during business hours or in an emergency room after hours. Do not give any fever-reducing medications in this situation (you donât want to hide the fever until after a doctor has evaluated your baby).