It should be observed in Part 2 of the experiment that when the temperature of the gas sample in Celsius degrees has a value of zero, the volume of gas in the sample has a value greater than zero. Explain why it would not be correct to say that at a constant pressure and for a fixed amount of gas, the volume occupied by a gas is directly proportional to the Celsius temperature.

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.

Are formed where bumps from two surfaces come into contact ?