A soft keyboard (sometimes called an onscreen keyboard or software keyboard) is a system that replaces the hardware keyboard on a computing device with an on-screen image map.
An ideal gas is defined as one in which all collisions between atoms or molecules are perfectly eleastic and in which there are no intermolecular attractive forces. One can visualize it as a collection of perfectly hard spheres which collide but which otherwise do not interact with each other.
in such a gas all the internal energy is in the form of kinetic energy and any change in internal energy is accompanied by a change in temperature an ideal gas can be characterized by three state variables absolute pressure p volume v and absolute temperature t the ideal gas law can be viewed as arising from the kinetic pressure of gas molecules colliding with the walls of a container in accordance with newton s laws but there is also a statistical element in the determination of the average kinetic energy of those molecules