One nanometer is equal to how many centimeters?

1 cm = 10,000,000 nm

Explanation:

Since 1 meter = 100 centimeter

and     1 meter = 1,000,000,000 nanometer

so,       1 cm =  10,000,000 nm

Here we can simplify a formula to convert cm to nm as

nanometers = 10,000,000 multiplies centimeters.

Example: convert 8 cm into nms.

                 so nm = 10,000,000 multiplies 8

                               80,000,000 nms

c. newton's third law of motion

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.