Molecular Physics | Thermodynamics Answers

Calculate the thrust of a steel ball of 10cm radius immersed in water. (Archimedes Principle) Show solution.

If it is sufficient to express the specific heat as a function of temperature with Cp=a+bT, choose one of the chemicals in the list below and calculate the increase in the internal energy of the unit mass from 300K at 150kPa to 500K at constant pressure by deriving the relevant relation. How many errors (%) would have been made if the fixed Cv value were taken?

Find the temperature, mass and total enthalpy of the liquid and vapor phases of 5 kg of water in a container with a pressure of 150 kPa and a constant volume of 200L.

When a stationary gas was compressed frictionless at constant pressure it's initial state of 12cm³ and 0.105mPa was found to change to final state of 120cm³ there was a transfer of 425kj of heat from the gas during the process.How much did the internal energy of the gas change

in an air motor cylinder the compressed air has an internal energy of 450 kj/kg at the beginning of the expansion and an internal energy of 220kj/kg after expansion.of the work done by air during the expansion under a pressure of 50Pa by 6×10^7cm³ per 10kg.calculate the heat flow to and fro from the cylinder

In a piston-cylinder setup, 50 liters of water at 200kPa and 25°C is heated under constant pressure until it completely evaporates.

a) The mass of the water,

b) its temperature in the last case,

c) The heat given to the water during evaporation,

d) its volume in the final state,

e) Show the P-V and T-V (Pressure, temperature and specific volume) graph that you will draw the whole system.

A carnot engine absorbed 1,0kj of heat at 300k and exhausted 400j of heat at the end of the cycle. What is the temperature at the end of the cycle?

Anna and her 40 kg classmate, Maria is 3.00 x 10 -8 N.

Determine the mass of Anna if they are 2.0 m away from each other.

the water flows in the channel 844 mm x 586 mm at the rate of 8 m/sec. What is the volume flow in ft^3/sec?

A subway train stops at two stations that are 2 km. apart. The maximum Acceleration and deceleration of the train are 2 m/s^2 and 1.6 m/s^2 Respectively and the maximum allowable speed is 20 m/s.

1. What is the time to reach a max. velocity.

2. Which of the following gives the time to travel constant speed of 20 m/s.

3. Which of the following gives the shortest possible time of travel between two stations.