The distance to a type I Cepheid that has a period of 8 days and a measured brightness of (1.02×10^-9) W/m^2 is _____ meters.

The distance to a type I Cepheid that has a period of 8 days and a measured brightness of (1.02×10^-9) W/m^2 is _____ meters.

Report your answer to 2 decimal places using scientific notation in the textboxes below.

Only one number should be to the left of the decimal point!

n.nn x 10^n

and

The distance to a type I Cepheid that has a period of 8 days and a measured brightness of (6.20×10^-10) W/m^2 is _____ meters.

Report your answer to 2 decimal places using scientific notation in the textboxes below.

Only one number should be to the left of the decimal point!

n.nn x 10^n

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