Asilver bar 0.125 meter long is subjected to a temperature change from 200 c to 100 c . what will be the length of the bar after the temperature change?
a) 0.00023635 meter
b) 0.124764 meter
c) 0.2363 meter
d) 0.189 meter

The air in an automobile tire with a volume of 2.60 ft3 is at 70°f and 21 psig. determine the amount of air that must be added to raise the pressure to the recommended value of 30 psig. assume the atmospheric pressure to be 14.6 psia and the temperature and the volume to remain constant. the gas constant of air is ru = 53.34ft⋅lbflbm⋅r(1 psia144 lbf/ft2) = 0.3704 psia⋅ft3lbm⋅r the amount of air that must be added to raise the pressure is lbm