Molecular Physics | Thermodynamics Answers

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

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

 A certain gas at 101.32k Kpa and 16 C whose volume is 2.83 m3 are compressed into a storage vessel of 0.31 m3 capacity. Before admission, the storage vessel contained the gas at a pressure and temperature of 137.8 Kpa and 24 0C; after admission the pressure has increased to 1171.8 Kpa. What should be the final temperature of the gas in the vessel in Kelvin?

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?

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?