Light of wavelength 400 nm and a power of 1.83 x 10-6 w is incident onto a photodetector with quantum efficiency 0.57. the sensor is connected to a 5.7 k52 load resistor and operated at a temperature of 300 k. (a) determine the responsivity of the detector. (b) determine the photocurrent produced by the detector. (c) if the sensor is connected to a 5.7 ks2 load resistor, determine the voltage generated across the load resistor from this photocurrent. (d) if the detector is dominated by johnson noise and has a measurement bandwidth of 1 mhz, estimate the snr.

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?