A 600 Hz analog cosine signal is sampled at a rate of 800 samples/sec. Draw the frequency spectrum of the sampled signal. What frequencies are present if the sampled signal is sent through a low pass filter with cutoff frequency of 600 Hz?

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). heavier cars tend to have lower fuel efficiencies (lower mpg ratings). which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form