A spacecraft travels at a speed of 45000\(km/hr\). Scientists write large distances using powers of \(10\) to make calculations easier.
1. The prime factorisation of 45000 is
2. The standard exponential form of 45000 is
3. Scientists found the speed of another spacecraft is \(4.2 \times 10^5\) \(km/hr\). Express it as a numerical value.
4. Scientists compared the speed of both spacecrafts and found that