(a) Explain the terms:

(i) thermal equilibrium;

(ii) fundamental interval.

 

(b) List two uses of the hydraulic press.

 

(c) Name the material used to reset the steel index in the Six's maximum and minimum thermometer.

 

(d)(i) A nursing mother prepared her baby's milk mixture at 85°C, in a feeding bottle. In order to cool it to 40°C, she immersed the bottle in an aluminium bowl of heat capacity 90 JK\(^{-1}\) containing 500 g of water at 26°C. If the mass of the mixture is 300g, calculate the specific heat capacity of the mixture. [Neglect heat losses and heat capacity of the bottle; specific heat capacity of water = 4200 J kg\(^{-1}\) K\(^{-1}\)]

(ii) (\(\alpha\)) Name two ways through which the bottle losses heat.

(\(\beta\)) Name two industrial processes in which heat exchanger is used.