DP Physics (first assessment 2025)

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Question 21M.2.HL.TZ2.c

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Date May 2021 Marks available [Maximum mark: 2] Reference code 21M.2.HL.TZ2.c
Level HL Paper 2 Time zone TZ2
Command term Calculate Question number c Adapted from N/A
c.
[Maximum mark: 2]
21M.2.HL.TZ2.c

An engineer needs to move a space probe of mass 3600 kg from Ganymede to Callisto. Calculate the energy required to move the probe from the orbital radius of Ganymede to the orbital radius of Callisto. Ignore the mass of the moons in your calculation. 

[2]

Markscheme

-GMJupiter11.88×109-11.06×109=«5.21×107 J kg-1»  ✓

« multiplies by 3600 kg to get » 1.9 × 1011 «J» ✓


Award [2] marks if factor of ½ used, taking into account orbital kinetic energies, leading to a final answer of 9.4 x 1010 «J».

Allow ECF from MP1

Award [2] marks for a bald correct answer.

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