DP Physics (last assessment 2024)

Question 21N.2.HL.TZ0.b

Date	November 2021	Marks available	[Maximum mark: 1]	Reference code	21N.2.HL.TZ0.b
Level	HL	Paper	2	Time zone	TZ0
Command term	Show that	Question number	b	Adapted from	N/A

[Maximum mark: 1]

21N.2.HL.TZ0.b

The mass of Titan is 0.025 times the mass of the Earth and its radius is 0.404 times the radius of the Earth. The escape speed from Earth is 11.2 km s⁻¹. Show that the escape speed from Titan is 2.8 km s⁻¹.

[1]

Markscheme

$v = « \sqrt{\frac{2 G M}{R}} = » \sqrt{\frac{0.025}{0.404}} \times 11.2$

$2.79$ «km s⁻¹» ✓

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Additional higher level (AHL)

Additional higher level (AHL) » Topic 10: Fields » 10.2 – Fields at work

Additional higher level (AHL) » Topic 10: Fields

Question 21N.2.HL.TZ0.b

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