May/June 2026 Paper 42

2026 · 11 questions · 41 parts · 80 marks

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1(a)(i)1(a)(ii)1(b)(i)1(b)(ii)

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2(a)(i)2(a)(ii)2(b)(i)2(b)(ii)

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3(a)(i)3(a)(ii)3(a)(iii)3(b)

–/7 mks

4(a)4(b)(i)4(b)(ii)4(b)(iii)

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–/5 mks

–/6 mks

7(a)(i)7(a)(ii)7(b)

–/6 mks

8(a)(i)8(a)(ii)8(b)(i)8(b)(ii)8(b)(iii)

–/10 mks

9(a)(i)9(a)(ii)9(b)9(c)

–/6 mks

10(a)(i)10(a)(ii)10(a)(iii)10(b)

–/8 mks

11(a)11(b)11(c)(i)11(c)(ii)

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3(a)(i)Density PressureEasy2 marks

Figure 3.1 shows an electric shower. The temperature of water as it enters the shower is

15^{\circ} C

. The water is heated in the shower. The water leaves the shower at a temperature of

38^{\circ} C

. The density of water is 1000 kg /

m^{3}

. The specific heat capacity of water is 4200 J / (kg

^{\circ} C

). The water flows through the shower at a rate of 0.0045

m^{3}

/ min. Show that the mass of water that leaves the shower in 4.0 min is 18 kg.

Figure 3.1, an electric shower unit on a wall with control dials, a flexible hose and a shower head

Answer

0 words

3(a)(ii)Temperature Internal Energy Heat CapacityEasy2 marks

Calculate the energy required to increase the temperature of 18 kg of water from

15^{\circ} C

to

38^{\circ} C

.

3(a)(iii)Energy Work Power EfficiencyEasy2 marks

The energy in 3(a)(ii) is transferred to the water in 4.0 min. Calculate the power transferred to the water.

3(b)Temperature Internal Energy Heat CapacityEasy1 mark

At another time, the temperature of the water leaving the shower is higher. The power supplied to the water remains constant. Suggest one reason for this increase in temperature.

Answer

0 words