DP Physics (last assessment 2024)

Question 18M.3.SL.TZ2.7e

Date	May 2018	Marks available	[Maximum mark: 1]	Reference code	18M.3.SL.TZ2.7e
Level	SL	Paper	3	Time zone	TZ2
Command term	Outline	Question number	e	Adapted from	N/A

[Maximum mark: 1]

18M.3.SL.TZ2.7e

A cylinder is fitted with a piston. A fixed mass of an ideal gas fills the space above the piston.

M18/4/PHYSI/SP3/ENG/TZ2/07._01

The gas expands isobarically. The following data are available.

$\begin{array}{*{20}{l}} {{\text{Amount of gas}}}&{ = 243{\text{ mol}}} \\ {{\text{Initial volume of gas}}}&{ = 47.1{\text{ }}{{\text{m}}^3}} \\ {{\text{Initial temperature of gas}}}&{ = -12.0{\text{ °C}}} \\ {{\text{Final temperature of gas}}}&{ = + 19.0{\text{ °C}}} \\ {{\text{Initial pressure of gas}}}&{ = 11.2{\text{ kPa}}} \end{array}$

(e)

There are various equivalent versions of the second law of thermodynamics. Outline the benefit gained by having alternative forms of a law.

[1]

Markscheme

different paradigms/ways of thinking/modelling/views

allows testing in different ways

laws can be applied different situations

OWTTE

[1 mark]

Syllabus sections

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 18M.3.SL.TZ2.7e

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