The dwarf planet Eris orbits the Sun with an orbital period of approximately 558 years558\text{ years}558 years. Assuming Eris has a circular orbit, what is the approximate orbital radius of Eris in astronomical units (AU\text{AU}AU)? (The orbital period of Earth is 1 year1\text{ year}1 year and its orbital radius is 1 AU1\text{ AU}1 AU).
8.2 AU8.2\text{ AU}8.2 AU
24 AU24\text{ AU}24 AU
68 AU68\text{ AU}68 AU
1.3×104 AU1.3 \times 10^4\text{ AU}1.3×104 AU
28 exam-style questions on Edexcel GCSE Physics 7.1 The Solar System and gravity. Each one has a worked solution and a mark scheme showing where the marks go.