How do we convert from Nanometres (nm) to Metres (m) and vice versa? When do I u

Question

How do we convert from Nanometres (nm) to Metres (m) and vice versa?
When do I use for example Nanometres as *10^9 as opposed to 10^-9 (which one is correct, the positive or the negative)?
Ps: I need them to solve wavelength and frequency calculations using the rule:
C(m/s) = wavelength (m) * v (1/s)
(Please get back to me as soon as possible as my exam is tmw and I'm practicing problems at the moment) How do we convert from Nanometres (nm) to Metres (m) and vice versa?
When do I use for example Nanometres as *10^9 as opposed to 10^-9 (which one is correct, the positive or the negative)?
Ps: I need them to solve wavelength and frequency calculations using the rule:
C(m/s) = wavelength (m) * v (1/s)
(Please get back to me as soon as possible as my exam is tmw and I'm practicing problems at the moment) How do we convert from Nanometres (nm) to Metres (m) and vice versa?
When do I use for example Nanometres as *10^9 as opposed to 10^-9 (which one is correct, the positive or the negative)?
Ps: I need them to solve wavelength and frequency calculations using the rule:
C(m/s) = wavelength (m) * v (1/s)
(Please get back to me as soon as possible as my exam is tmw and I'm practicing problems at the moment)
When do I use for example Nanometres as *10^9 as opposed to 10^-9 (which one is correct, the positive or the negative)?
Ps: I need them to solve wavelength and frequency calculations using the rule:
C(m/s) = wavelength (m) * v (1/s)
(Please get back to me as soon as possible as my exam is tmw and I'm practicing problems at the moment)

Explanation / Answer

1 Nanometer = 10-9 M

so multiply the factor when converting to meter from nanometer.

its this much only

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