W8 PASS

W8 PASS

W8 PASS

W8 PASS

TODAY’S SESSION

TODAY’S SESSION

KAHOOT + SAQs

Multi choice quiz :)

Electives!

Group Activity: Phase Changers

Electives // MONPLAN

PLEASE try this it is worth your time I promise: https://monplan.apps.monash.edu/

Everyone did pharmacology second year (loved it)

Any arts subjects lowkey WAM booster

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Electives // MONPLAN

PLEASE try this it is worth your time I promise: https://monplan.apps.monash.edu/

Everyone did pharmacology second year (loved it)

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+PHY3202

+PHY3171

^biomed pre-reqs

SCI1202

^easy apparently

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WEEK 8 (revision week!)

Group Activity: Phase Changers

Where does phase change occur

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Group Activity: Phase Changers

Where does phase change occur

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What are they called?

Group Activity: Phase Changers

Where does phase change occur

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What are they called?

=fusion and then Vaporisation

FUSION

Q = mLf

solid ↔ liquid

VAPORISATION

Q = mLv

liquid ↔ gas�

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Group Activity: Phase Changers

How much energy needed for:

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Group 1:

1g ice at -20°C ➡️ water at 30°C

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Group 2:

1g water at 0°C ➡️ steam at 150°C

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Group 3:

1g steam at 110°C➡️ water at 30°C

For each group, calculate the thermal energy (Q).

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C Values:

c(ice) = 2.1 kJ/kg

c(water) = 4.186 kJ/kg

c(steam) = 2.0 kJ/kg

Group Activity: Phase Changers

Group 1: How much energy needed for 1 kg ice at -20°C -> water at 30°C

Group 2: How much energy needed for 1 kg water at 0°C -> steam at 130°C

Group 3: How much energy needed for 1 kg steam at 110°C -> water at 30°C

1. MOODLE self-review tests
2. End of workshop multi choices
3. Youtube to revise theory (don’t rewatching lectures)
4. PASS practise test
5. Textbook questions
6. Know your formula sheet!

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W9 test

two (2) A4 sheets with any notes you like on both sides

20 MCQs - 60 minutes to complete the test. ~3 mins per Q

1. FLAG AND MOVE THE F ON
2. Don’t be overwhelmed by the information presented. Always break it down into all the variables presented and what you need to find
1. This will allow you to figure out the required formula
2. Appropriate formula is sometimes the simplest

If there is mass and acceleration (F=ma)

1. Pay attention to the units
2. Pay attention to sig.figs
3. Once finished double check your flagged questions

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DURING THE TEST

TEST PREP

W5-8 content

KAHOOT time

Phase change question

During a phase change (e.g. melting, boiling), temperature remains constant while energy is used to change the phase (latent heat).

Pan question

SAQ time

SAQ 1: Alien pool party

Aliens have decided to invade Earth and use our swimming facilities. As if that’s not the worst thing to happen in 2025, these aliens are picky and only bathe in specific conditions. They use a swimming pool containing 20 × 10^3 L of a mysterious liquid Goop with density of 1.25 mg/mL and kept at temperature of 30◦C. Specific heat capacity of Goop is 8190 J/kg/K.

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1. What is the thermal energy of the pool in MJ?

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To increase the pool’s temperature, heated rocks with a SHC of 790 J/kg/K are added to the pool. These rocks have an initial temperature of 80◦C and a total mass of 500 kg of hot rock is added to the pool.

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• What is the pool’s final temperature?

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SAQ 1: Alien pool party

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• What is the thermal energy of the pool?

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• What is the pool’s final temperature?

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SAQ 2: Ahh it burns!

Shreya has burnt herself with coffee and is undergoing treatment that requires frequent use of a hydrotherapy bath. You need to calculate the energy requirements for heating water for effective treatment.

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1. If 14,220 kJ of heat was distributed to 200 kg of water at 20°C, what is the final temperature of the water to the nearest degree (celsius)? Assume the specific heat capacity of water is 4.186 kJ/kg°C.

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• If the heating system has an efficiency of 85%, calculate the total energy the system must use in MJ to 2 dp.

SAQ 2: Ahh it burns!

1. If 14,220 kJ of heat was distributed to 200 kg of water, what is the final temperature of the water to the nearest degree (celsius)? Assume the specific heat capacity of water is 4.186 kJ/kg°C.

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Q= mcΔT�ΔT = Q/mc = 14,220 kJ / (200 kg * 4.186 kJ/kg°C) = +17 degrees�Final T = 20 + 17 degrees = 37°C

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• If the heating system has an efficiency of 85%, calculate the total energy the system must use in MJ to 2 dp.

Total energy used = Energy required / Efficiency = 14,220 kJ / 0.85 = 16,729 kJ = 16.73 MJ

SAQ 3: COVID-25

Jas (54 kg) has contracted a new strain of COVID-25 from the 5G network! She has an extremely high fever and is at risk of brain damage. You need to manage her temperature.

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1. Calculate the heat transfer required in kJ to the nearest whole number to cool Jas by 1°C, assuming the specific heat capacity of the human body is approximately 3.47 J/g°C.

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• The thermal conductivity of typical cooling packs is 0.5 W/m/K. How much heat can a cooling pack 10 cm by 100 cm and 1 cm thickness transfer if the temperature difference is 5°C?

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• The ice packs aren’t working so Jas can only be treated by controlled exposure to infrared radiation. She is positioned 1m from a blackbody infrared heater with a surface area of 0.5 m² and a surface temperature of 500 K. The ambient temperature of the chamber is 300 K. What is the power transferred to Jas? Assume emissivity is 0.8.

SAQ 3: COVID-25

We done!

Good luck for your test if I don’t see you!

WEEK 9 revision for electricity next week <3