Each line has two characteristics: ______ and _______.
Fill in the blank(s) with the appropriate word(s).
width and darkness
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A 500 k? potentiometer is connected across a 5 V source. If the voltage from the wiper to the lower end of the potentiometer is 1.2 V, what is the resistance of that lower part?
A) 380 k? B) 0 ? C) 500 k? D) 120 k?
What cleaning method would be used for an air conditioning system that is extremely contaminated?
A. Purging B. Flushing C. Evacuating D. Ejecting
Problem 1.15 Knowing that a force P of magnitude 50 kN is required to punch a hole of diameter d = 20 mm in an aluminum sheet of thickness t = 5 mm, determine the average shearing stress in the aluminum at failure.
This question has four possible answers listed below and only one of them is correct. If you select one at random, what are the odds that you pick the correct answer?
a. 1:2 b. 1:3 c. 1:4 d. 1:5