What is the difference between a conductor and an insulator? a. wood is a good conductor but not a good insulator. b. metal is a good insulator but not a good conductor. c. a conductor transmits energy very well while an insulator does not. d. an insulator transmits energy very well while a conductor does not.

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

What best discribes the relationship between wavelength and frequency in a electromagnetic wave

Suppose that a certain fortunate person has a net worth of $71.0 billion ($7.10×1010). if her stock has a good year and gains $3.20 billion (3.20×109) in value, what is her new net worth?