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Some water is heated electrically in a glass beaker in an experiment to find the specific heat capacity of water. The temperature of the water is taken at regular intervals. The temperature-time graph for this heating is shown in Fig. 4.1.
As time passes, thermal energy (heat) is constantly supplied to the water but its temperature remains at 100 °C. (a)State two ways in which boiling differs from evaporation. 1. .....
Heat: ordinary level theory questions 2018 Question 7 [Ordinary Level] The temperature of an object can be measured using a thermometer. (i) What is heat? (ii) What is meant by the temperature of an object? (iii)What is the unit of temperature on the SI scale? (iv)Express 20 °C in the units you have named in part (iii).
Questions and model answers on 2.2 Thermal Properties & Temperature for the Cambridge O Level Physics syllabus, written by the Physics experts at Save My Exams.
Which block needs more thermal (heat) energy to heat it up by 10 °C and which block loses more thermal (heat) energy as it cools back to room temperature? è
A substance loses thermal energy (heat) to the surroundings at a steadyrate. The graph shows how the temperature of the substance changes with time. temperature. 0. P. Q time. What could the portion PQ of the graph represent? gas condensing. gas cooling. liquid cooling. liquid solidifying.
During the day, the panels supply 3.8 kg of hot water at 65 °C every hour. Calculate the average energy that the solar panels deliver to the water in one hour. Specific heat capacity of water = 4200 J / (kg °C).
