Physics · May / June 2023 · Paper 42 · Question 4
0625
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4(a)[3]
pressure decreases AND particles have smaller velocity / momentum / smaller EK / kinetic energy (when temperature is lower)
lower rate / frequency of collision of particles
particles collide with smaller force OR smaller impulse change
4(b)(i)[1]
–273 (°C)
4(b)(ii)[2]
(temperature at which) particles have least EK / kinetic energy
lowest possible temperature
4(c)[3]
200 cm3
pV = constant OR 9.0 × 104 × 350 = 1.6 × 105 × V2
V2 = [9.0 × 104 × 350] / 1.6 × 105 OR V2 = 2.0 × 10N OR 1.97 × 10N
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