What happens when you heat china having some dark paintings engraved on it at 1000°C and then examine it in a dark room immediately?
When the first law of thermodynamics, Q = ΔU + W, is applied to an ideal gas that is taken through an isothermal process,
The temperature of a body can be negative on the Kelvin scale.
In an isochoric process, the internal energy of a system decreases by 50 J. What is the heat exchange?
A block of copper weighs 3.0 kg. Copper has a specific heat capacity of 390 J kg-1K-1. It is cooled in the freezer so that the temperature drops from 25.0oC to 0.0oC. What is the total energy lost by the block of copper?
The response of a material due to the function of heat is known as __________
Which term is used to define the temperature at which a substance changes its status from solid to liquid?
Solids with weekly bonded electrons are good conductors of heat.
The internal energy comprises of two types of energies, those are
Temperature is a microscopic concept.
The energy due to which the molecules held at a fixed position vibrate, this energy is termed as
The outer ends of two bars A and B are at 100°C and 50° respectively. Calculate the temperature at the welded joint if they have the same cross-section and the same length and their thermal conductivities are in the ratio of A:B = 7:5.
Calorie is defined as the amount of heat required to raise the temperature of 1g of water by 1°C and it is defined under which of the following conditions?
A milkman boils the milk before distributing it in the pots. He raises the temperature of the milk from 10 °C to 130 °C with the thermal energy of 120000 J. If the mass of the milk is 25 kg, the specific heat capacity of the milk would be
When one end of the rod is heated, the molecules at the hot end vibrate with higher amplitude and transmit the heat from one particle to the adjacent particle and so on. What is the process?
A pure substance would freeze or solidify at its
When potassium is added to water, it is seen that the lower region becomes warm first and becomes less dense. It then moves up and the more dense cold water comes down and the process goes on. What is the process taking place?
What effect does the addition of thermal energy have on a material?
What happens when a material is heated?
The ability of a body to withstand sudden and severe temperature changes is known as________
540g of ice at 0°C is mixed with 540g of water at 80°C. What is the final temperature of the mixture?
On a hilly region, water boils at 95°C. What is the temperature expressed in Fahrenheit?