A 3kg energy drink is placed inside a -23oC freezer to cool it off. What is the mass of the air needed in order to cool the energy drink from 20oC down to 16oC? Assume the refrigerator is a perfect insulator. The specific heat capacity of the energy drink is 4184 J/kgoC. The specific heat capacity of the air is 1000 J/kgoC. Round to three decimal places and show all your work on the recording sheet for partial credit.

Apiping systems consists of 6 m of 6-std type k and 12 m of 4-std type k, both drawn copper tubing. the system conveys ethylene glycol at a rate of 0.013 m3/s. the pressure drop across the system is to be calculated. there are two 90° elbows in the 6-in pipe, a reduction from the 6-in pipe to the 4-in pipe and four 90° elbows in the 4-in pipe. all fittings are soldered (same as flanged) and regular. the inlet and outlet of the system are at the same height.