Specific Heat Capacity Coursework Physics Gcse Notes

1. Been trying to work out these questions for a while now and struggling Please can someone help me or point me in the right direction?

1) A flask contains 0.5kg of water at a temperature of 80 degrees Celsius. If 1.0kg of water at a temperature of 20 degrees Celsius is added to the flask what will be the temperature of the water in the flask after it has been mixed? You can assume that no heat is lost from the flask.

2) A copper poker with a mass of 1.0 kg and a temperature of 200 degrees Celcius is used to heat 200g of water. If the water has an initial temperature of 20 degrees Celcius what temperature might it be heated to by the poker? Explain why you are unlikely to obtain this temperature in practice.

Take specific heat capacity of:

water = 4200 J/Kg degrees Celcius
copper = 400 J/Kg degrees Celcius
2. These questions are all done by equating the heat lost by the hotter material to the heat gained by the cooler material. The final temperature of both will be the same.

You should know the formula for heat lost or gained in terms of specific heat capacity, mass and temperature change.

What are you stuck on? What don't you understand?
(Original post by Joe-G)
Been trying to work out these questions for a while now and struggling Please can someone help me or point me in the right direction?

1) A flask contains 0.5kg of water at a temperature of 80 degrees Celsius. If 1.0kg of water at a temperature of 20 degrees Celsius is added to the flask what will be the temperature of the water in the flask after it has been mixed? You can assume that no heat is lost from the flask.

2) A copper poker with a mass of 1.0 kg and a temperature of 200 degrees Celcius is used to heat 200g of water. If the water has an initial temperature of 20 degrees Celcius what temperature might it be heated to by the poker? Explain why you are unlikely to obtain this temperature in practice.

Take specific heat capacity of:

water = 4200 J/Kg degrees Celcius
copper = 400 J/Kg degrees Celcius
3. I'm studying GCSE Physics atm but have been given these as an extra challenge. I know the formula but don't know how to apply it to this question

(Original post by Stonebridge)
What are you stuck on? What don't you understand?

Practical 1 Momentum and momentum conservation - large trolleys
Practical 2 Momentum and momentum conservation - small trolleys
Practical 3 Momentum and momentum conservation using a linear air track
Practical 4 Rate of change of momentum using a linear air track
Practical 5 Rate of change of momentum using a trolley
Practical 6 Centripetal force - whirling bung
Practical 7 Centripetal force - rotating trolley
Practical 8 Measuring the charge stored by a capacitor
Practical 9 Effect of length and current on the force on a wire in a magnetic field
Practical 10 Specific heat capacity of a liquid
Practical 11 Specific heat capacity of a solid
Practical 12 The relationship between the pressure and temperature of a gas
Practical 13 The relationship between the pressure and volume of a gas
Practical 14 Measurement of the activity of a radioactive source
Practical 15 Simulation of radioactive decay
Practical 16 Graphical representation of simple harmonic motion
Practical 17 Forced oscillations
Practical 18 Investigating damped oscillations