Physics Past Questions and Answers

A quantity of hot water at 100<sup style='font-size: smaller;'>o</sup>C is added to 400g of water at 10<sup style='font-size: smaller;'>o</sup>C until the temperature of the mixture is 60<sup style='font-size: smaller;'>o</sup>C.<br/>Calculate the mass of the hot water added. [Specific heat capacity of water =4200JKg<sup style='font-size: smaller;'>-1</sup> K<sup style='font-size: smaller;'>-1</sup>]

A battery of emf 24V is connected to three resistor P, Q and R as illustrated in the diagram. Determine the voltage across the resistor Q

In an experiment in which a molten substance is allowed to cool, the cooling curve above was obtained. The temperature 60<sup style='font-size: smaller;'>o</sup>C is known as the

In an experiment in which a molten substance is allowed to cool, the cooling curve above was obtained. The temperature 60<sup style='font-size: smaller;'>o</sup>C is known as the

Which of the following concepts is a method of heat transfer that does not require a material medium?