Four different compact fluorescent bulbs and their comparison to ...

[KimWrice]

Four different compact fluorescent bulbs and their comparison to incandescent bulbs are advertised as follows: a 42-W cfl produces the light of a 150-W incandescent, a 9-W cfl produces the light of a 40-W incandescent, a 23-W cfl produces the light of a 100-W incandescent,and a 13-W cfl produces the light of a 60-W incandescent. Which cfl produces the most light per watt, and which one produces the least? Assume true advertising
 a. the 13 W, the 42 W
  c. the 23 W, the 42 W
  b. the 9 W, the 23 W
  d. the 42 W, the 13 W

Question 2

Two equal charges, each Q, are separated by some distance. What third charge would need to be placed half way between the two charges so that the net force on each charge would be zero?
 a. -Q/8
  c. -Q/4
  b. -Q
  d. -Q/2

[mcarey591]

Answer to Question 1

A

Answer to Question 2

C

[KimWrice]

Thanks

[mcarey591]

Welcome