Suppose that, when sampled at a rate of N = 8, a particular signal is given as: f = 3e0 − 2e1 + e4 − 7e7. What would the signal look like, in terms of the standard basis, if sampled at a frequency of N = 4?

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?