You may have noticed that a fluorescent light flickers, especially when it is about to blow out. Fluorescent lights do not produce constant illumination like incandescent lights. Ideally, fluorescent light cycles sinusoid ally from dim to bright 60 times per second. At a certain distance from the light, the maximum brightness is measured at 50 watts per square centimeter (W/cm2) and the minimum brightness at 20 W/cm2.
a. To collect data on light brightness from three complete cycles, how much total time should you record data?
b. Sketch a graph of the sinusoidal model for the data collected in 8a if the light climbed to its mean value of 35 W/cm2 at 0.003 s.
c. Write an equation for the sinusoidal model.