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.
Overheating is associated with an increased risk of cot death (sudden infant death syndrome). The safest temperature range for your baby to sleep in is actually between 16 degrees C and 20 degrees C (you can buy a thermometer to check the temperature is constant). What temperature do you like to keep the room your baby sleeps in?