Molecular Physics | Thermodynamics Answers

A cylindrical drum 2-ft diameter and 4ft height is filled with fluid whose density is 40lb/ft^3.

Determine

(A) the total volume of

(B) its total mass in pounds and slugs

(C) its specific volume and

(D) its specific weight where g=31.90 fps^2

15 cubic ft of air at 300 psia and 420°F at constant volume. What are

(a) the final pressure

(b) the work

(c) the change of internal energy

(d) the transferred heat

(e) the change of enthalpy and

(f) the change entropy?

The pressure below the depth of 25 m of a homogenous fluid is 50.473 psi.

Calculate specific weight in kN/m3,density of fluid in kgm/m3 and its specific

gravity.

An oil (specific gravity = 0.75) with a depth of 10 m has a barometric reading of

755 mmHg. Calculate the absolute pressure in kPa

The pressure below the depth of 25 m of a homogenous fluid is 50.473 psi.

Calculate specific weight in kN/m3,density of fluid in kgm/m3 and its specific

gravity.

The depth of the fluid is 10 m. What is the specific gravity if the pressure of the fluid at 10 m is 100 kPa?

The outboard motor of a banca has an efficiency of 22% and it discards 1 x 10³] of heat every second. How much work does the motor do every second?

A turbine operates under steady flow conditions, receiving steam at the following state: Pressure

1.5 MPa, temperature 185 degree C, enthalpy 2785 kJ/kg, velocity 33.3 m/s and elevation 3 m.

The steam leaves the turbine at the following state: Pressure 22 kPa, enthalpy 2512 kJ/kg, velocity

100 m/s, and elevation 0 m. Heat is lost to the surroundings at the rate of 0.29 kJ/s. If the rate of

steam flow through the turbine is 0.42 kg/s, what is the power output of the turbine in kW?

The energy absorbed by an engine is two times greater than the work it performs.

What is its thermal efficiency?

What fraction of the energy absorbed is expelled to the cold reservoir?

In a water tank there is 12.0 liters of water at a temperature of 44.0 °C. Boiling water at 100.0 °C is poured into the tank until the water is at 90.0 °C. How many liters of boiling water was poured into the tank? The specific heat capacity of liquid water is 4.19 kJ/kg/°C.