Calculate the frequency and energy associated with radiation of wavelength 540 nm. If an
atom emits light of this wavelength, what color is observed? (See text for relevant equa-
tions and a diagram of the electromagnetic spectrum.)

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of