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.
  It depends on the age of the person with a temp. If it is an infant 0-3 months then a rectal temp over 100.2 needs medical attention. Rectal temps of 102.0 in babies is need for a call to the pediatrician.