Task 1. MATCHING TYPE. Match each Term on the left with the best Descriptor on the right. Each Descriptor may be used only once. WRITE THE LETTER OF YOUR
ANSWERS ONLY

1. Lens
2. Focal Length
3. Convex Lens
4. Concave Lens
5. Focal Point
6. Vertex
7. Orientation
8. Principal axis

A. Point where the converging light rays meet
B. Lens that is thinner in the middle than at the edge
D. Lens that is thicker in the middle than at the edge
E. Distance from the center of the lens to the focal point
F. Line that passes through the optical center
G. images formed by lenses may be inverted or upright
H. Geometric center of the lens

What causes the formation of ocean currents?

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.

In the future, people will only enjoy one sport: electrodisc. in this sport, you gain points when you cause metallic discs hovering on a field to exchange charge. you are an electrodisc player playing the popular four disc variant. the disks have charges of qa = −8.0 µc, qb = −2.0 µc, qc = +5.0 µc, and qd = +12.0 µc. (1) you bring two disks together and then separate them. you measure the resulting charge of these two disks and find that it is +5.0 µc per disk. which two disks did you bring together? (a) a and b (b) a and c (c)a and d (d)b and c(e) b and d (f) c and d. (2) you bring three disks together and then separate them. you measure the resulting charge of these three disks and find that it is +3.0 µc per disk. which three disks did you bring together? a, b, and c (a) a, b, and d (c) a, c, and d (d) b, c, and d. (3) given the resulting charge of each disk measured in (b) is +3.0 µc, how many electrons would you need to add to a disk of this charge to electrically neutralize it? electrons