How To Solve Specific Heat Problems

The usual units used for quantities in this equation are degrees Celsius for temperature (sometimes Kelvin), grams for mass, and specific heat reported in calorie/gram °C, joule/gram °C, or joule/gram K.

You can also think of specific heat as heat capacity per mass basis of a material.

This means to heat one gram of water by one degree Celsius, it would require 4.18 joules of energy.

A series of free GCSE/IGCSE Physics Notes and Lessons.

Think of it this way: A cup of piping hot coffee and spoonful of the same coffee might have the same temperature, but they have very different heats.

The spoonful has considerably less heat and if drank would not burn nearly as bad as the cup of coffee which contains more heat, despite being at the same temperature.These three specific heat example problems will show how to find the specific heat of a material or other information involving the specific heat.The equation most commonly associated with specific heat is Q = mcΔTwhere Q = Heat energy m = mass c = specific heat ΔT = change in temperature = (T)A good way to remember this formula is Q = “em cat”Basically, this equation is used to determine the amount of heat added to a material to raise the temperature some amount (or the amount lost as the material cools).Calculate the energy required to increase the temperature of 2kg of water from 20°C to 100°C.The specific heat capacity of water is 4200 J/kg °C. An iron has an aluminium plate with a mass of 1.5kg.In these lessons, we will • Describe what is meant by specific heat capacity.• Calculate the amount of energy stored in or released from a system as its temperature change.This means that if the same amount of heat were applied to both silver and aluminum, the silver would increase in temperature by a larger amount than the aluminum because silver has a lower specific heat capacity.We can relate heat (q), mass (m), specific heat (C), and the change in temperature (ΔT) with the equation: q = m × C × ΔT.Calculate the thermal energy stored in the plate when the temperature rises from 20°C to 200°C.The specific heat capacity of aluminium is 913 J/kg° C. A hot water bottle cools down from 80°C to 20°C, releasing 756000J of thermal energy.


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