A severe localized downdraft that can be experienced beneath a severe thunderstorm.

A visible electrical discharge produced by thunderstorms.

If a causal FIR system has a symmetric impulse response that is nonzero up to n=10, the group delay of the system will be

Consider a causal linear phase filter that provides a perfect notch at 10kHz. The sampling frequency is 40kHz. The gain at DC must be equal to 2.  What is the difference equation of the filter?

5. Which component converts output into a measurable signal for feedback?

7. The error signal in a feedback system is:

1. What do the roots of the characteristic equation represent in state-space analysis?

6. A feedback control system is also called:

Dilution Factor 10-4 10-5 10-6 10-7 10-8 CFU counted 965 534 186 29 7   You completed a series of serial dilutions using saliva and plated your dilutions on Petrifilms. You counted the colony forming units that grew and included the values in the table above. State which dilution factor(s) you should use to calculate the CFU/mL of your original sample. 

Based on the tubes provided for Sample C, match the result with the tube.