The phase angle of a sinusoidal source determines the value of the source at t=0. A sinusoidal source described by the function cos(ωt+ϕ) has a phase angle of ϕ. By convention, the phase angle’s units are usually specified in degrees, because those units are easier to visualize than the units of radians. Changing the phase angle of a sinusoid shifts it left or right along the time axis but has no effect on the magnitude or frequency of the sinusoid. What is the phase angle of the voltage source described as?

Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer