Phys 10 the speed of light is roughly 300,000,000 meters per second (m/s). in scientific notation, this quantity is:

The speed of light = 300,000,000 m/s

As this number is too large.So we often use scientific notation to represent large values as well as small values

Now to represent  300,000,000 m/s  to scientific notion

                  =3×(100000000) m/s

                  =3×10⁸ m/s

 Where 8 is exponent

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.