Solve the Problem. -The Intensity of Light from a Light Source Varies Inversely

question 65

Multiple Choice

Solve the problem.
-The intensity of light from a light source varies inversely as the square of the distance from the source. Suppose the the intensity is 40 foot-candles at a distance of 10 feet. What will the intensity be at a distance of 23 feet? Round your answer to the tenths place.

• A)7.3 foot-candles
• B)7.8 foot-candles
• C)7.0 foot-candles
• D)7.6 foot-candles

---

Definitions:

Capture Prey

The act or process by which an organism secures another organism for food.

Bilateral Symmetry

Having paired structures so the right and left halves of an object are mirror images.

Flatworms

A group of simple, soft-bodied invertebrate animals belonging to the phylum Platyhelminthes, characterized by their flat, bilaterally symmetrical bodies and lack of specialized respiratory and circulatory systems.

Cnidarians

A phylum of aquatic animals that includes jellyfish, corals, and sea anemones, characterized by a simple body structure with a single opening.