Molecular Physics | Thermodynamics Answers

Two objects attract each other with a gravitational force of magnitude 1.00 10-8 N when separated by 19.3 cm. If the total mass of the objects is 5.05 kg, what is the mass of each?

3. A refrigerator operating on standard vapour compression cycle has a co￾efficiency performance of 6.5 and is driven by a 50 kW compressor. The enthalpies of saturated

liquid and saturated vapour refrigerant at the operating condensing temperature of 35°C are

62.55 kJ/kg and 201.45 kJ/kg respectively. The saturated refrigerant vapour leaving evaporator

has an enthalpy of 187.53 kJ/kg. Find the refrigerant temperature at compressor discharge. The

cp of refrigerant vapour may be taken to be 0.6155 kJ/kg°C