The absolute temperature (Kelvin scale) T is related to the temperature `t_c` on the Celsius scale by`T_C = 7- 273.15`Why do we have 273.15 in this relation, and not 273.16

Convert the following temperatures to the Kelvin scale. 25^@C

Convert the following temperatures to the Kelvin scale. 373^@C

At what temperature do the Kelvin and Celsius scales coincide?

Two absolute scales A and B have triple points of water defined to be 200 A and 350 B. What is the relation between T_A and T_B ?

Answer the following questions based on the P-T phase diagram of CO_2 : CO_2 is heated to a temperature 70^@C and compressesothermally. What changes in its properties do you expect to observe?

The electrical resistance in ohms of a certain thermometer varies with temperature according to the approximate law: R=R_o[1 + a (T- T_o)] . The resistance is 101.6 ohom at the triple-point of water 273.16 K, and 165.5 ohm at the normal melting point of lead (600.5 K). What is the temperature when the resistance is 123.4 ohm

The temperatures of two bodies measured by a thermometer are t_1 = 40^@C +_ 1 C and t_2 = 80^@C +_ 1^@C . Calculate the temperature difference and the error there in.

Explain why (a) Two bodies at different temperatures T_1 and T_2 if brought in thermal contact do not necessarily settle to the mean temperature (T_1, + T_2)//2 .