Do you mean 6.50 x 10^2 terameters? If so...
6.50e2 teram x (1e12 m / 1 tera) x (1 nano / 1e-9) = 6.50e23 or 6.50 x 10^23 nanometers
6.5E23
One nanometer is equivalent to .000000001 meters (1 x 10^-9 m). Therefore 650 nanometers equals .00000065 meters or 6.5 x 10^-7 meters.
6.5 x 102
A tetrameter is not a unit of length - it is a unit of rhythm. Perhaps you are mistaking this for a terameter, which indeed is a unit of length, equal to 1,000,000,000 metres.
"nanometer" or billionths of a meter. 650 nanometers is the wavelength of the light produced by the diode.
The scientific notation of 65,000 is 6.5x104.
Average power consumption for a person in the UK is 650 W. Assuming an average load of 3 kW per household 102 MW would power about 34,000 homes, sometimes more, sometimes less.
650 ÷ 10 = 65
650 billion of them.
650 cm = 255.905"
650 kilograms is 1,433 pounds.
75 is 11.54% of 650.