DP Physics (last assessment 2024)

Question 20N.3.SL.TZ0.9b(i)

Date	November 2020	Marks available	[Maximum mark: 2]	Reference code	20N.3.SL.TZ0.9b(i)
Level	SL	Paper	3	Time zone	TZ0
Command term	Calculate	Question number	b(i)	Adapted from	N/A

b(i).

[Maximum mark: 2]

20N.3.SL.TZ0.9b(i)

The diagram represents an ideal, monatomic gas that first undergoes a compression, then an increase in pressure.

An adiabatic process then increases the volume of the gas to $5.0 \times 10^{- 2} m^{3}$ .

(b(i))

Calculate the pressure following this process.

[2]

Markscheme

use of $P V^{\frac{5}{3}}$ is constant « $4.0 \times 10^{5} \times {(2.0 \times 10^{- 2})}^{\frac{5}{3}} = P_{2} \times {(5.0 \times 10^{- 2})}^{\frac{5}{3}}$ » ✓

$P_{2} = 8.7 \times 10^{4} « Pa »$ OR $87$ « $kPa$ » ✓

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Option B: Engineering physics

Option B: Engineering physics » Option B: Engineering physics (Core topics) » B.2 – Thermodynamics

Option B: Engineering physics » Option B: Engineering physics (Core topics)

Question 20N.3.SL.TZ0.9b(i)

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