Question 43

Solution: Choice D is correct. Since 1 nm = 10-9m Therefore, 40 microns =(40) (10-6) / 10-9nm = 40,000 nm

Question 42

1) a is the level of stress at which performance is minimal. 2) a is the level of peak performance. 3) a is the level of stress at which performance is maximal. 4) a is the level of stress at which performance is 1/2 of maximal performance. Solution: Choice 3 is...

Question 41

Solution: Choice 1 is correct. We know that, Volume of a pyramid = 1/3 B h (where B is the base area and h is the height of the pyramid) In the given figure, the base of the pyramid is an equilateral triangle with length l. Therefore, Hence, Volume of...

Question 40

1) It is linear because the voltage increases by 0.41 volts every 2.5 minutes. 2) It is linear because the voltage decreases by 0.8 volts every 0.4 minutes. 3) It is exponential because the voltage decreases by 20% every 2.5 minutes. 4) It is exponential because the...

Question 39

What is the value of sin (5π / 6) ? 1) 2) 3) 4) 150 Solution: Choice C is correct. Sin(5π/6) = sin(π- π/6) = sin(π/6) = ½. Alternate Solution: Sin(5π/6) = sin (150°)  ( by substituting π radians = 180°) Now 150° lies in the second quadrant, and sin is positive in...