Molecular Physics | Thermodynamics Answers

An ideal gas thermometer and a mercury thermometer are calibrated at 0 oC and at 100 oC. The thermal expansion coefficient for mercury is 𝛼 = 1 𝑉0 ( 𝜕𝑉 𝜕𝑇 ) 𝑃 = 1.817𝑥10−4 + 5.90𝑥10−9𝜃 + 3.45𝑥10−10𝜃² , where 𝜃 is the value of the Celsius temperature and 𝑉0 = 𝑉 at 𝜃 = 0. What temperature would appear on the mercury scale when the ideal gas scale reads 50 oC? 

Four hundred grams of aluminum at 100 ᵒ C is dropped into 100 g of water at 20 ᵒ C

contained in a copper calorimeter of mass 80 g. What is the final temperature of the mixture?

1. A 560.0 N cyclist sits on a bicycle seat and compresses the two springs that support it.  The spring constant equals 2.2 X 104 N/m. 
2. How much is each spring compressed?
3. By how much does the compression increase in each spring’s elastic PE?

Steam at 30 bar is contained in a cylinder behind a piston the initial volume being 0.08067 m'kg calculate the heat flow to or form cylinder and the work done by the steam a) According to the low pys - C to final volume 0.2 m / kg. b) According to a linear law to final dry saturated volume of 0.1047m / kg

When a boxer is moving away from a punch , the force experienced is reduced because ?

A vertical spring has a force constant of 125 N/M. by how much will the spring be compressed if a mass of 0.525 kg placed on top of it?

What is the volume of aluminum ball at 10⁰C it it's volume at 160⁰C is 300cm³?

The newly constructed bridge in your town is a steel arch bridge 600m in length. How much does the total length of the roadway decking change between temperature extremes of 30⁰C and 50⁰C?

a steam plant uses 3.045 tonne of coal per hour .the steam generated is fed to a turbine whose output is 4.1MW .if the calorific value is 28 MJ/kg,determine the thermal efficiency of the plant

Find the heat transferred from the nitrogen to the surroundings. Use cv for nitrogen = 0.75 kJ/kg-K.