Curriculum
Course: IB Physics HL
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Curriculum

IB Physics HL

Theme A — Space, Time and Motion

0/125 Dr Dabour Hub Science Diagram and Course Material

Theme B — The Particulate Nature of Matter

0/105 Dr Dabour Hub Science Diagram and Course Material

Theme C — Wave Behaviour

0/73 Dr Dabour Hub Science Diagram and Course Material

Theme D — Fields

0/77 Dr Dabour Hub Science Diagram and Course Material

Theme E — Nuclear and Quantum Physics

0/89 Dr Dabour Hub Science Diagram and Course Material

Tools and Inquiry — IB Physics skills

0/43 Dr Dabour Hub Science Diagram and Course Material
Quiz

D.1.11 Orbital Motion, Speed and Energy – Check yourself

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1.
The orbital speed of a satellite at radius r around mass M is
√(2GM/r)
√(GM/r)
GM/r
√(GMm/r)
2.
If a satellite moves to an orbit of larger radius its speed
increases
stays constant
decreases
becomes zero
3.
The total energy of a satellite in a circular orbit is
−GMm/2r
GMm/2r
−GMm/r
zero
4.
For a circular orbit Ep compared with Ek is
equal to Ek
−2 times Ek
−Ek
−½ Ek
5.
A satellite has orbital speed 6.0 km s−1. A second orbit with radius 4 times larger has speed
1.5 km s−1
12 km s−1
3.0 km s−1
6.0 km s−1
6.
A satellite of mass m and one of mass 2m orbit at the same radius. Their speeds are
double for the heavier one
half for the heavier one
4 times for the heavier one
equal
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