c) 3.0g PB
What is specific heat?
Specific heat, the quantity of heat required to raise the temperature of one gram of a substance by one Celsius degree.
The units of specific heat are usually calories or joules per gram per Celsius degree
or
The specific heat capacity is defined as the quantity of heat absorbed per unit mass (kg) of the material when its temperature increases 1 K (or 1 °C), and its units are J/(kg K) or J/(kg °C).
The formula for specific heat capacity, C , of a substance with mass m , is
C = Q /(m ⨉ ΔT)
Where Q is the energy added and ΔT is the change in temperature.
Lead has a sufficiently low specific heat capacity (128 J/kg/K)
If a 5kg bag dropped five times from a height of 1.0m onto a rigid floor should increase in temperature by about 2K.
Therefore,
Pb has the smallest heat capacity.
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