Molecular Physics | Thermodynamics Answers

An engine absorbs 2000J of heat from a hot reservoir and expels 750J to a cold reservoir during each operating cycle. What is the efficiency of the engine?

The choice of thermometric liquids in a thermometer should depend on the following properties except:

An engine absorbs 2000J of heat from a hot reservoir and expels 750J to a cold reservoir during each operating cycle. What is the efficiency of the engine?

A platinium resistance thermometer has resistance of 52.5 ohms and 9.75 ohms at 0 degrees Celsius and 100 degrees Celsius respectively. When the resistance is 8.25 ohms, find the temperature.

The ice and steam points on a thermometer correspond to X and 50mm respectively. A temperature of 60 degree Celsius corresponds to 52mm on the thermometer. Calculate the value of X.

A railway line is laid with 10m length of rail on a day when the temperature is 2.50°C. There is a gap of 0.5cm between the rails. Find the temperature at which the gap will close.

Lead has a specific heat of 0.031 cal/gram °C. How many calories does it take to raise the temperature of 200 g of lead from 50°C to 80°C?

A platinium resistance thermometer has resistance of 52.5 ohms and 9.75 ohms at 0 degrees Celsius and 100 degrees Celsius respectively. When the resistance is 8.25 ohms, find the temperature.

A square plate of side 10cm is made of a metal of linear expansivity 2 X 10^−5/K. As the plate is heated from 30°C to 100°C, the area of one face of the plate will increase to__________

If the specific heat capacity of water initially is 4.2 X 10^3 per kg per K and g=10m/s, the difference in temperature of water between the top and bottom of a 210m high water fall is___________