complete the following conversions.

155u to m = *10^-3
1850n to mm = *10^-6
1.68G to M = *10^3
from G to M = *10^3

To complete the conversions, we need to multiply the given value by the conversion factor.

1. Converting 155u to m:
To convert micrometers (u) to meters (m), we multiply the given value by the conversion factor. The conversion factor from micrometers to meters is 10^(-6) (since there are 10^6 micrometers in 1 meter). Therefore, to convert 155u to m, we multiply 155u by 10^(-6):
155u * (10^(-6)) = 0.000155 m.

So, 155u is equal to 0.000155 meters.

2. Converting 1850n to mm:
To convert nanometers (n) to millimeters (mm), we multiply the given value by the conversion factor. The conversion factor from nanometers to millimeters is 10^(-6) (since there are 10^6 nanometers in 1 millimeter). Therefore, to convert 1850n to mm, we multiply 1850n by 10^(-6):
1850n * (10^(-6)) = 0.00185 mm.

So, 1850n is equal to 0.00185 millimeters.

3. Converting 1.68G to M:
To convert gigabytes (G) to megabytes (M), we multiply the given value by the conversion factor. The conversion factor from gigabytes to megabytes is 10^3 (since there are 10^3 megabytes in 1 gigabyte). Therefore, to convert 1.68G to M, we multiply 1.68G by 10^3:
1.68G * (10^3) = 1680M.

So, 1.68G is equal to 1680 megabytes.

4. Converting from gigabytes (G) to megabytes (M):
To convert from gigabytes to megabytes, we multiply the value by the conversion factor. The conversion factor from gigabytes to megabytes is 10^3 (since there are 10^3 megabytes in 1 gigabyte). Therefore, to convert any value from G to M, we multiply the value by 10^3.

For example, if we have 4.5G and want to convert it to M, we multiply 4.5G by 10^3:
4.5G * (10^3) = 4500M.

So, 4.5G is equal to 4500 megabytes.