GUIDE TEST
Paint coverage
ft/gal
400
Area Painted (ft?)
1,800
1,600
1,400
1,200
1,000
800
600
400
200
200 ft/gal
D
0 1 2. 3 4
Number of Gallons of Paint
1
ft/gal
200
o
400 ft/gal
Which of these best represents
the rate of change of the
maximum area painted with
respect to the number of gallons
of paint used?
CLEAR ALL

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

1.   what is light?

light is an electromagnetic wave visible to the human eye. 

2. what is a reflection?

the rebounding of a light ray when it hits a mirror.

3. what is the incident ray?

contacts the surface of an object.

4. what is the reflected ray?

bounces off a reflective surface.

5. what is the normal ray?

perpendicular to the surface of a mirror.

6. what is the angle of incidence?

an angle formed by the incident ray and the normal.

7. what is the angle of reflection?

an angle formed by the reflected ray and the normal.

8. what is refraction?

(bending.)

9. what is a converging lens?

bring together light rays that pass through.

10. what is a diverging lens?

spreads out light passing through.

11. focal point?

the real point where the refracted rays meet when the incident rays run parallel.

i copy pasted btw from an website..