Problem 3 Value 100 Simplify 32x w 16xw 20x xw 20xw 20xw Che

Problem 3 Value: 100 Simplify. 32x w 1.6xw 20x xw 20xw 20xw Check Answer Problem 4 Value: 100 If I 1.38 mA and P = 26.5 mw, calculate the value of the indicated variable to three significant digits O b. 13.9 k Oe, 140 d. 19.5 Check Answer

Solution

3) 32x²w/1.6xw² = (32/1.6) * ( x^2-1/w^2-1)=(20)*( x/w)= 20x/w option c)

4) Give P = 26.5 mW , I = 1.38 mA

No need of unit conersion because both are in mili units

R = P /I² = 26.5/(1.38)²= 26.5/1.9044= 13.915143 ohm

5) s²/10 -9/10

taking 1/10 as factor

=> (1/10)(s² - 9) => (1/10)(s² - 3²)

applying identity (a² - b²) = (a + b) (a - b)

=> (1/10)( s -3)( s + 3) option b)