handwritten answers only (notext)

HANDWRITTEN ANSWERS ONLU (NOTEXT)

HANDWRITTEN ANSWERS ONLY (NOTEXT)

1. Construct a table showing the volume of water. including the starting and ending temperatures and the time taken for 3 trials. Fulfil the practical criteria of heating at least 1 litre of water by 10C in 1 hour. (You may create the table in Word and paste the results). (3 Marks) 2. Using the data from your table. record the average volume of water. average time taken and average temperature change. Use these average values for calculations in questions 3 and 4 below. (1 Mark) 3. Calculate the heat energy transferred (in joules) by your solar heater. (3 Marks) Page 11.516 Q + 4. Calculate the thermal conductivity of the material used in your solar heater. You must list the quantities of all variables. (3 Marks) Assignment 4, LA023231, 6492PY, Edition number 1 11 @ New South Wales Technical and Further Education Commission, 2018 (TAFE NSW), Archive version 1, April 2018 5. Briefly describe how you determined the area used in your calculation of thermal conductivity above. (2 Marks)6. Using second hand investigation sources find the thermal conductivity value of your material and cite the source for this value. (2 Marks) 7'. Calculate the percentage error. (2 Marks} Discussion 1. Define what is meant by thermal energy. (1 Mark) 2. State the Zeroth law of thermodynamics and distinguish between thermal contact and thermal equilibrium, explaining how ALL of these apply to your solar heater. (5 Marks) 3. Explain the change of temperature observed in your experiment in relation to kinetic energy. Include a graph to support your explanation. Make sure to clearly label your data don't relyr on colours to distinguish the data. (5 Marks) 4. On average 1.3?0 W of radiant heat energy is incident on 1.0 m2 of the earth's surface from the sun every second. Assuming 100% efficiency and no energy loss. how long will it take for the sun to heat your 1 litre of water by 10C using 1.0 m2 of heat absorbing material? (3 Marks) 5. Account for the differences between your experimental value and the theoretical value of the thermal conductivity and the time taken to heat your 1 litre of water by 10C. (3 Marks) 6. Based on your results evaluate the effectiveness of your solar hot water heater and discuss improvements you would make to a future design. (5 Marks) Conclusion Relate the conclusion to the aim of the experiment. Use a summary of the data to show how the hypothesis is supported, or not. (2 Marks)