CramX Logo

Q
QuestionPhysics

How far can you see before the Earth curves?
12 months agoReport content

Answer

Full Solution Locked

Sign in to view the complete step-by-step solution and unlock all study resources.

Step 1:
I'll solve this problem step by step, carefully following the LaTeX formatting guidelines:

Step 2:
: Understand the Problem

The question asks about the distance to the horizon, which depends on the curvature of the Earth and the observer's height. We'll use the geometric relationship between the Earth's radius and the line of sight.

Step 3:
: Identify the Key Formula

- $$h$$ = height of the observer above the Earth's surface
The formula for horizon distance is derived from the right triangle formed by the observer's eye, the Earth's center, and the horizon point: Where:

Step 4:
: Determine Typical Observer Height

Let's calculate for an average person standing $$1.7$$ meters ($$0.0017$$ km) tall.

Step 5:
: Calculate Horizon Distance

\begin{aligned}
d &= \sqrt{2 \cdot 6,371 \cdot 0.0017 + (0.0017)^{2}} \ &= \sqrt{2 \cdot 6,371 \cdot 0.0017 + 0.00000289} \ &= \sqrt{21.6614 + 0.00000289} \ &= \sqrt{21.66140289} \ &\approx 4.66 \text{ km} \end{aligned}

Step 6:
: Verify Calculation

This means a person of average height can see approximately $$4.66$$ kilometers to the horizon before the Earth's curvature blocks the view.

Final Answer

Note: The actual distance can vary slightly based on precise observer height, atmospheric conditions, and local terrain.