Which of the following terms refers to the amount of heat needed to change 1 kg of a substance from a liquid to a gas at its boiling point?
a. specific heat capacity
b. specific heat of phase changes
c. latent heat of fusion
d. latent heat of vaporization

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)

Awalk up the phase change graph worksheet

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?