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25 cards from this deck
Electrical energy supplied (QQQ)
Low specific heat capacity
Ensures uniform temperature throughout water
Heat loss to surroundings
Makes specific heat capacity too high
Minimises heat loss to surroundings
0.1°C
Calorimeter also gains heat during experiment
15°C
Q=mwcw(θ2−θ1)+mccw(θ2−θ1)Q = m_w c_w (θ_2 - θ_1) + m_c c_w (θ_2 - θ_1)Q=mwcw(θ2−θ1)+mccw(θ2−θ1)
System reaches stable temperature before measuring
Prevents burning and ensures even heating
Use polished calorimeter
Pre-cool water to 7°C below room temperature
Conservation of energy
Find specific heat capacity of water using electrical heating
Joulemeter
Copper has low specific heat capacity
Ensures uniform temperature throughout the water
Heat loss to the surroundings
Systematic error
Makes it too high
Approximately 15°C
Q=mwcw(θ2−θ1)+mccc(θ2−θ1)Q = m_w c_w (\theta_2 - \theta_1) + m_c c_c (\theta_2 - \theta_1)Q=mwcw(θ2−θ1)+mccc(θ2−θ1)
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