The substance that is used as the constant common material to measure specific gravity of solids is:
A) Air in a vacuum @ 29.9 in Hg. B) Air at standard conditions.
C) Water @ standard conditions. D) Ice @ standard conditions.
C
You might also like to view...
?An advantage of a(n) _____ contract is that the contractor does not have to allow for unforeseen problems.
A. ?cost-plus B. ?lump-sum C. ?fixed-sum D. ?presale
The structural wood panels (plywood and OSB) are graded for durability with respect to weather exposure in two classifications. State the classifications and the differences between them.
What will be an ideal response?
What are the general characteristics of gerbils?
What will be an ideal response?
One way of measuring the thermal conductivity of a material is to sandwich an electric thermofoil heater between two identical rectangular samples of the material and to heavily insulate the four outer edges, as shown in Fig. P1-56. Thermocouples attached to the inner and outer surfaces of the samples record the temperatures. During an experiment, two 0.5-cm-thick samples 10?cm × 10?cm in size are used. When steady operation is reached, the heater is observed to draw 25 W of electric power, and the temperature of each sample is observed to drop from 82°C at the inner surface to 74°C at the outer surface. Determine the thermal conductivity of the material at the average temperature.
