Write down the value of the following quantities into powers of tens. (without prefixes on the units)
1. 60 ps =
2. 500 mg =
3. 20000 mm =
4. 400 ns =
5.250 ug =
6. 8000 km =
7.500 dm =
8.5000 GHz =
9.23.4 x 10 ³ pJ ​=​​