A green light has a wavelength of 485 nm.
What is its frequency? (1 nanometer is 10-9 m)

What should the power status of a circuit be when measuring resistance with an ohmmeter?

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

Connie has $660,000 she wants to save. if the fdic insurance limit per depositor, per bank, is $250,000, which of these way is distributing her money between three banks will guarantee that all of her money is insured ?