School brochures have stood the test of time, and there's a good reason why. Muatan Haba Tentu c= Q mΔθ c= muatan haba tentu, J kg °C Q= kuantiti haba yang dibekalkan, J m= jisim, kg Δθ= perubahan dalam suhu, °C or K . Formula Karnival&Bulan STEMPLB 2023/2024 Muhammad Irfan bin Azreen (5WC) Umar bin Ferwahn Fairis (5WC) 1. 2. Disediakan oleh: PameranSains MataPelajaran: Fizik Tarikh: 12Julai2023 Tempat:MakmalSains3 PERINGATAN ! Muatan haba tentu Masa diambil untuk suhu mengingkat
Kuasa pemanas rendam, P/W 50 Masa pemanasan, t/s 300 Jisim blok aluminium, m/kg 1 Suhu awal aluminium, θ/°C 31 Suhu akhir aluminium, θ/°C 37 1.Bikar dibalut dengan tuala 2. Bikar diisi dengan air sehingga 3/4 penuh 3. Bacaan jisim,m diambil dan direkodkan menggunakan neraca elektronik 4. Radas disediakan seperti rajah di atas 5. Bacaan suhu awal diambil dan direkod 6. Pemanas rendam dihidupkan dan jam randik dimulakan pada masa yang sama 7. Perubahan bacaan termometer diperhatikan 8.Pemanas rendam dimatikan selepas 5 minit. Suhu tertinggi diambil dan direkod sebagai suhu akhir. 9. Langkah 5-8 menggunakan blok aluminium yang dibaluti tuala Prosedur: c= m(θ -θ ) Pt 2 1 c= c= 15000 50(300) 1(37-31) 6 c= 2500 J kg °C -1 -1 Menentukan nilai muatan haba tentu air Tujuan: Semakin tinggi muatan haba tentu, semakin lama masa diambil untuk meningkatkan 1 darjah celcius (C) untuk 1kg bahan Hipotesis: Pembolehubah dimanipulasi : Bahan Pemboleh ubah bergerak balas : Suhu akhir bahan Pemboleh ubah dimalarkan : Suhu awal Pembolehubah: Bekalan kuasa, pemanas rendam, bikar, jam randik, termometer, kaki retort, neraca digital, air, tuala, blok alumunium Senarai bahan & alat radas . Gambarajah: Hipotesis diterima. Semakin tinggi muatan haba tentu, semakin lama masa diambil untuk meningkatkan 1C untuk 1kg bahan Kesimpulan: Keputusan bagi blok aluminium Pengiraan:
Karnival&Bulan STEMPLB 2023/2024 Muhammad Irfan bin Azreen (5WC) Umar bin Ferwahn Fairis (5WC) 1. 2. Prepared by: reason why. Specific Heat Capacity PameranSains MataPelajaran: Fizik Tarikh: 12Julai2023 Tempat:MakmalSains3 c= Q mΔθ c= specific heat capacity, J kg °C Q= quantity of heat supplied, J m= mass of substance, kg Δθ= change in temperature, °C or K . Formula REMEMBER ! SPECIFIC HEAT CAPACITY TIME TAKEN TO INCREASE THE TEMPERATURE
To determine the specific heat capacity of water. Aim: The higher the specific heat capacity, the higher the time taken to increase the temperature of 1kg of substance by 1C Hypothesis: Manipulated variable : Substance Responding variable : Final temperature of substance Constant variable : Initial temperature of substance Variables: Power supply, immersion heater, beaker, stopwatch, thermometer, retort stand, electronic balance, water, tissue paper, 1kg aluminium block List of materials & apparatus: Diagram: Beaker was wrapped with tissue paper Beaker was filled with water until 3/4 full Mass of water,m was recorded using electronic balance Apparatus was set up as shown in diagram Initial temperature of water was recorded The immersion heater was switched on and the stopwatch was started at the same time The change in the thermometer reading was observed After 5 minutes, the immersion heater was switched off.The highest temperature of reading was recorded as final temperature. Steps 5-8 was repated using an aluminium block wrapped with tissue paper 1. 2. 3. 4. 5. 6. 7. 8. 9. Procedure: Hypothesis is accepted. The higher the specific heat capacity,the higher the time taken to increase the temperature by 1C of 1kg substance Conclusion: Power of immersion heater, P/W 50 Heating time, t/s 300 Mass aluminium, m/kg 1 Initial temperature of aluminium, θ/°C 31 Final temperature aluminium, θ/°C 37 Results for Aluminium block: Calculation: c= m(θ -θ ) Pt 2 1 c= c= 15000 50(300) 1(37-31) 6 c= 2500 J kg °C -1 -1