Calm down dear â itâs only a formula!! This tells us how many atoms, and how many types of atoms can be found in a particular. chemical. For instance, if we use a periodic table we can see that Ca stands for calcium, and as. there is no number after Ca we know a molecule of this chemical contains only 1 calcium atom. The period table also shows us that C stands for Carbon, so there must be one carbon atom in. this molecule.
The correct term for the common terminal of a potentiometer is the slider. A rheostat is simply a variable resistance used to control power to a load and you are correct about the wiring. Only the slider and one other terminal are used. A potentiometer uses all three terminals, enabling a variable voltage or signal to be tapped off from the slider.
Homeostasis is the process by which a nearly stable internal environment is maintained in the body so that cellular metabolic functions can proceed at maximum efficiency. Homeostasis is maintained by muscles or glands that are regulated by sensory information from the internal environment.