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1. A student has designed his own thermometer with a temperature scale called S. Here
he has marked the freezing point of water as 20 °S and the boiling point of water as
150 °S. The S scale has 130 divisions.
(a) By drawing a suitable diagram, express the relation (mathematical equation)
between 𝑇𝐶 (temperature in Celsius) and 𝑇𝑆
(temperature in S)
(b) What reading will be shown in S scale when he measures the temperature of an
object at 60℃.
A hot filament radiates 1.50 W of light. The filament has a surface area of 0.250 mm2
and an emissivity of 0.950. what is the temperature (in kelvin) of the filament?
Three different gases, namely; He, N2 and CO2 were placed in separate containers.
16. Which of the following is the closest value of Cv for the He gas?
Two concrete spans,of a 250m long bridge,are placed end to end so that there is no room allowed for expansion.If a temperature increase of 20.0°C occurs,what is the height y to which the spans rise when they buckle?
A lab sample of gas is taken through cycle abca .The net work done on the gas is -1.2J.Along path ab,the change in internal energy is +3.0J and the work done on the gas is -5.0J.Along path ca,the energy transferred to the gas as heat is +2.5J.
(a). Determine the energy transferred to the gas as heat along path ab.
(b). Determine the energy transferred to the gas as heat along path bc.
a lump of steel of mass 8 kg at 1000 k is dropped in 80 kg of oil at 300 k. calculate the entropy change of steel the oil and the universe. take specific heats of steel and oil as 0.5 kj/kg K and 3.5 Kj /kg K respectively
A gas has a volume of 120m³ at stp. if the gas is compressed adiabatically to a volume of 25m³. calculate the new temperature, pressure and work done on the gas. [Cp= 1.68kj/kg-¹ k-¹, Cv = 1.20 kj kg-¹ k-¹]
A square plate of side 12cm is made of metal of linear expansivity 2*10-5 k as the plate is heated from 30degree c to 100degree c , the area of one of the face of the plate will increase to ?
a quantity of low density gas in rigid container is initially at room temperature ( 20 degrees C ) and a particular pressure P1. If the gas Is heated to a temperature of 60 degrees C, by what factor does the pressure change.
3. James (26 kg) sits on a wheeled office chair (16 kg) holding a fire extinguisher (18 kg when empty). He points the discharge horn to the right and ejects 9 kg of carbon dioxide at 20 m/s. What is his speed and direction after the fire extinguisher is emptied (assuming friction is negligible)?
