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Cambridge IGCSE Combined Science practice

Paper 6 structured question: Stars and the Universe

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Stars and the Universe

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Paper 6Alternative to PracticalPractical3 marks

Analyzing results from an orbital speed experiment.

Results Table

Results of Orbital Speed Experiment

The table below shows the radius and corresponding orbital period of a satellite.

Radius (m)Orbital Period (s)
1060
20120
30180
  1. a

    Calculate the orbital speed for a radius of 20 m.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 6 structured question: Stars and the Universe

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Method

Method for Measuring Orbital Speed

In this experiment, you will measure the time taken for a satellite to complete one orbit at different radii. Record the radius and the time taken for each orbit.

Radius (m)Time (s)
1060
20120
30180
  1. a

    State the independent variable in this experiment.

    Aim for approximately 1 distinct marking point.

    [1]