4400 Higher June 2009 Paper 3 Q12
12 1 astronomical unit = 150 million kilometres.
(a) Write the number 150 million in standard form. (2)
The distance from Venus to the Sun is 108 million kilometres.
(b) Express 108 million kilometres in astronomical units.
Give your answer in standard form. (2)
Give your answer in standard form. (2)
| Scheme | Marks |
|---|---|
| \(1.5 \times 10^8\) | M1 A1 |
| (2) |
Notes
M1 A1: M1 for \(1.5 \times 10^m\)
A1 if \(m = 8\)
| Scheme | Marks |
|---|---|
| \(7.2 \times 10^{-1}\) | M1 A1 |
| (2) | |
| (4 marks) |
Notes
M1 A1: M1 for \(7.2 \times 10^n\) or 0.72 oe with digits 72 eg \(72 \times 10^{-2}\)
A1 if \(n = -1\)