Molecular Physics | Thermodynamics Answers

At what ocean depth is the liquid pressure equal to 152 cm Hg? What is the absolute pressure at that depth? Density of the sea water is 1030 kg/m³

Airplane normally fly at altitude of 36000 ft. Find the atmospheric pressure at that altitude.

1. A 92 kg/s flow of steam enters a turbine at 100 bar, 774 K and a velocity of 35 m/s. The machine is well insulated and the steam leaves at 0.1 bar, 365 K and at a velocity of 350 m/s. Calculate the power output from the turbine and the inlet and outlet pipe diameters required assuming that steam is an ideal gas with Cp=1901 J/kg.K.

A copper cube with sides of length 40mm had its surface blackened.the cube is heated up to 500k and place inside a room at a constant temperature of 300k.calculate the initial rate of temperature fall of the cube, assuming it is a perfect blackbody.take SHC of aluminium to be 400j/kg/k, density of aluminium=7800kg/m3

A Carnot heat engine uses a hot reservoir consisting of a

large amount of boiling water and a cold reservoir consisting of a

large tub of ice and water. In 5 minutes of operation, the heat

rejected by the engine melts 0.0400 kg of ice. During this time,

how much work W is performed by the engine?

A pipe in an industrial plant is designed to carry a fluid of density 1500 kg m–3 at a speed of 3 m s–1. Any faster than this and the flow could become turbulent, with undesirable results. Any slower than this and the fluid could start to congeal on the sides of the pipe. The fluid is to be carried from a holding tank which is at a pressure of Pt to a manufacturing line at atmospheric pressure (Patm= 100kPa) which is 2.5 m below the holding tank. At what

pressure must the tank be maintained?

A certain resistance thermometer reads 14.5 Ω in pure melting ice and 18.5 Ω in steam at standard atmospheric pressure. What will be its resistance at room temperature of 27.0oC?

A body of mass 0.6kg is thrown vertically upward from ground with a speed of 20ms-1. Calculate its potential energy at the maximum height

1.5 kg of liquid having a constant specific heat of 2.5 kJ/kg K is stirred in a well-insulated chamber causing the

temperature to rise by 15°C. Find ΔE and W for the process

The temperature of an ideal gas remains constant while the absolute pressure changes from 100 kpa to 800 kpa. If initial volume is 100 liters, what is the final volume in liters