State the energy in the following while in use: A steam engine.
Name two factors on which the heat energy liberated a body depend.
Rishi is surprised when he sees water boiling at 115°C in a container. Give reasons as to why water can boil at the above temperature.
State the energy in the following while in use: Burning of a candle.
Some ice is heated at a constant rate, and its temperature is recorded after every few seconds, till steam is formed at 100C. Draw a temperature-time graph to represent the change. Label the two-phase changes in your graph.
Why is the base of a cooking pan generally made thick?
1 cal g-1 °C-1 = ........... J kg-1 °C-1.
