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.
Thatâs why it is good to take your babyâs/childâs temperature a few times when s/he is fine. It may be that his/her normal temperature is really 97.8, so that 99.8 could signify a fever. Usually we say someone has a fever if the temperature inside the body is 1.5 â 2 degrees higher than usual. Most pediatric providers will call it a fever when the rectal temperature is higher than 100.4 degrees Fahrenheit or 38.0 degrees Centigrade.