PLS HELP ME I DONT HAVE MUCH TIME LEFT The Euler buckling load of a 160-cm-long column will be times the Euler buckling load of an equivalent 120-cm-long column.

1.78

0.56

0.75

2.37

1.33

0.42

Calculate the minimum area moment of inertia for a rectangular cross-section with side lengths 3 cm and 8 cm.

201 cm4

18 cm4

128 cm4

4 cm4

24 cm4

As shown in fig. p3.64, a closed, rigid tank fitted with a fine-wire electric resistor is filled with refrigerant 22, initially at 2108c, a quality of 80%, and a volume of 0.01 m3. a 12-volt battery provides a 5-amp current to the resistor for 5 minutes. if the final temperature of the refrigerant is 408c, determine the heat transfer, in kj, from the refrigerant.

What happens to light waves from a star as the star moves away from earth?

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.