The temperature T of a cooling object drops at a rate proportional to the difference (T-s) where S is a constant temperature of surrounding medium. If initially T = `150^(@`C), find the temperature of the cooling object at any time t.

The rate at which a substance cools in moving air is proportional to the difference between the temperatures of the substance and that of the air. If the temperature of the air is 290 K and the substance cools from 370 K to 330 K in 10 min, when will the temperature be 295 K?

The specific heat c of a solid at low temperature shows temperature dependence according to the relation c= DT^(3) where D is a constant and T is the temperature in kelvin. A piece of this solid of mass m kg is taken and its temperature is raised from 20K to 30K. The amount of heat required in the process in energy units is

The specific heat of many solids at low temperature vary with absolute temperature T according to the relation s=aT^(3) , where a is a constant. Find the heat energy required to raise the temperature of a mass m of such a solid from T=0K" to "T=20K

At constant temperature V/T ratio for different quantities of any ideal gas will be different is the statement right?