WILL GIVE BRAINLIEST AND 30 POINTS!
Consider two lightbulbs that exhibit 1600 lumens.

1. The efficacy of a 100 W incandescent lightbulb is_ lm/W.
A. 16
B. 33
C. 67
D. 89

2. What is the power of a CFL lightbulb if its efficacy is 67 lm/W? W.
A. 0.042
B. 33
C. 24
D. 89

1. A

2. C

Explanation:

1. 1600/100 = 16

2. 67 = 1600/x

x = 1600/67

23.88059701

15.3 cos 65 degrees trig

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.