Question

is 1 nm is equal to 0.000000001?

how would you write 0.15 nm in standard form?

how would you write 565 nm in normal numbers?

how would you write 590 nm in normal numbers?

thanks

Answer 1

Yes, 1 nm = 0.000000001 m

As far as I know, all of the above are standard or normal form, using nm as the unit.

Answer 2

Here are some common metric prefixes, symbols and the corresponding multiplicative factors that may help you:

tera (t)- 1,000,000,000
mega (m) - 1,000,000
kilo (k) - 1,000
milli (m) - 1/1,000
micro (μ) - 1/1,000,000
nano (n) - 1/1,000,000,000

For example,
1 ns = 0.000 000 001 second
1 mm = 0.001 metre
1 mb = 1,000,000 bytes
(note: sometimes mb is used to mean 1,048,576 bytes, equal to 2²⁰ bytes).

Answer 3

for the last two questions i meant decimal form, im so confused

Answer 4

You probably meant in "decimal metres".

565 nm = 0.000 000 565 metre

Notice that I have used a "space" as a digital group separator. Depending on the context, a comma is more commonly used in U.S. while the space is recommended by the ISO.