Exam 4: Physical Properties of Materials

The specific gravity of a material is the ratio of its density relative to the density of water:

Volumetric specific heat is best defined by which one of the following:

The mass diffusion rate dm/dt across a boundary between two different metals is a function of which of the following variables (four best answers):

The coefficient of thermal expansion measures the change in volume of a material per degree of temperature:

Copper is generally considered easy to weld because of its high thermal conductivity:

A superconductor is characterized by which one of the following:

The electrical conductivity of a material is the reciprocal of its resistivity:

In the heating of most metal alloys, melting begins at a certain temperature and concludes at a higher temperature.In these cases, which of the following temperatures marks the beginning of melting:

The thermal diffusivity of a material is its thermal conductivity divided by its specific heat:

Ohm's Law is expressed by which one of the following relationships:

The thermal expansion properties of polymers are generally

The strength-to-weight ratio of a material is its yield strength divided by its density:

In an electrolytic cell, the anode is the electrode that is